initial commit / add all books

50 files changed, 473 insertions, 0 deletions

diff --git a/1172/CH3/EX3.1/3_1.txt b/1172/CH3/EX3.1/3_1.txt
new file mode 100755
index 000000000..1c827e44e
--- /dev/null
+++ b/1172/CH3/EX3.1/3_1.txt
@@ -0,0 +1,5 @@
+

+ # Problem 1 # 

+Standard formula Used 

+ ( 1/2)*m*v^2 = h*nu - phi

+ Maximum velocity of photoelectron can be 1.211060e+06  m/s.. 

diff --git a/1172/CH3/EX3.1/Example3_1.sce b/1172/CH3/EX3.1/Example3_1.sce
new file mode 100755
index 000000000..dab903feb
--- /dev/null
+++ b/1172/CH3/EX3.1/Example3_1.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+h = 6.6e-34 // plank's constant

+nu = 2e15 // frequency in Hz

+phi = 6.72e-19

+m = 9e-31

+//Sample Problem 1 Page No. 135

+printf("\n\n\n # Problem 1 # \n")

+printf("Standard formula Used \n ( 1/2)*m*v^2 = h*nu - phi")

+v = sqrt ((h * nu)/ m ) //calculation of maximum velocity of photoelectron

+printf("\n Maximum velocity of photoelectron can be %e  m/s.. ", v)

diff --git a/1172/CH3/EX3.10.1/3_10a.txt b/1172/CH3/EX3.10.1/3_10a.txt
new file mode 100755
index 000000000..cde67caf9
--- /dev/null
+++ b/1172/CH3/EX3.10.1/3_10a.txt
@@ -0,0 +1,5 @@
+ # Problem 10 a # 

+

+ Standard formula Used 

+ 2 * d * sin(theta) = n * lambda 

+ Separation between adjacent layers of crystals is 2.983165 angstrom. 

diff --git a/1172/CH3/EX3.10.1/Example3_10a.sce b/1172/CH3/EX3.10.1/Example3_10a.sce
new file mode 100755
index 000000000..01cdabbb5
--- /dev/null
+++ b/1172/CH3/EX3.10.1/Example3_10a.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+lambda = 0.52 // wavelength in angstrom

+theta = 5 // in degree

+n = 1 // order of brags reflection

+//Sample Problem 10 a  Page No. 139

+printf("\n\n\n # Problem 10 a # \n")

+printf("\n Standard formula Used \n 2 * d * sin(theta) = n * lambda ")

+d = n * lambda / (2 * sin (theta * %pi / 180))

+//calculation of separation between adjacent layers of crystals

+printf ("\n Separation between adjacent layers of crystals is %f angstrom. ", d)

diff --git a/1172/CH3/EX3.10.2/3_10b.txt b/1172/CH3/EX3.10.2/3_10b.txt
new file mode 100755
index 000000000..f6ea9e9e0
--- /dev/null
+++ b/1172/CH3/EX3.10.2/3_10b.txt
@@ -0,0 +1,5 @@
+ # Problem 10b # 

+

+ Standard formula Used 

+ 2 * d * sin(theta) = n * lambda 

+ Angle for secondary maxima is  10. 

diff --git a/1172/CH3/EX3.10.2/Example3_10b.sce b/1172/CH3/EX3.10.2/Example3_10b.sce
new file mode 100755
index 000000000..585b9c0cb
--- /dev/null
+++ b/1172/CH3/EX3.10.2/Example3_10b.sce
@@ -0,0 +1,12 @@
+clc

+//Given that

+n = 2 // order 

+lambda = 5.2e-11 // wavelength in Angstrom 

+d = 2.98e-10 // interatomic separation in Angstrom

+//Sample Problem 10b page No. 139

+printf("\n\n\n # Problem 10b # \n")

+printf("\n Standard formula Used \n 2 * d * sin(theta) = n * lambda ")

+theta_rad = asin ( (n * lambda) / ( 2 * d)) //calculation of angle for secondary maxima in radian

+theta_deg = theta_rad * 180 / %pi //calculation of angle for secondary maxima in degree

+printf ("\n Angle for secondary maxima is  %d. ", theta_deg )

+

diff --git a/1172/CH3/EX3.11/3_11.txt b/1172/CH3/EX3.11/3_11.txt
new file mode 100755
index 000000000..64981fe94
--- /dev/null
+++ b/1172/CH3/EX3.11/3_11.txt
@@ -0,0 +1,5 @@
+# Problem 11 # 

+

+ Standard formula Used 

+ delta_lambda = h * (1 - cos (theta )) / ( m_e * c)

+ Frequency after scattering  is 2.541919e+19 Hz.
\ No newline at end of file
diff --git a/1172/CH3/EX3.11/Example3_11.sce b/1172/CH3/EX3.11/Example3_11.sce
new file mode 100755
index 000000000..65ef169d6
--- /dev/null
+++ b/1172/CH3/EX3.11/Example3_11.sce
@@ -0,0 +1,15 @@
+clc

+//Given that

+nu = 3.2e19 // frequency in hartz

+theta = 90 // angle of scattered photon in degree

+m_e = 9.1e-31 // mass of electron in Kg

+c = 3e8 // speed of light in m/s

+h = 6.626e-34 // plank's constant

+//Sample Problem 11  Page No. 140

+printf("\n \n\n# Problem 11 # \n")

+printf("\n Standard formula Used \n delta_lambda = h * (1 - cos (theta )) / ( m_e * c)")

+lambda = c / nu//calculation of incident wavelength

+lambda_shift = h *(1 - cos(theta * %pi / 180))/ ( m_e * c) //calculation of shift in wavelength

+lambda1 = lambda + lambda_shift//calculation of wavelength of scattered photon

+nu1 = c / lambda1//calculation of Frequency after scattering  

+printf ("\n Frequency after scattering  is %e Hz. ", nu1)

diff --git a/1172/CH3/EX3.12/3_12.txt b/1172/CH3/EX3.12/3_12.txt
new file mode 100755
index 000000000..9c058fa4f
--- /dev/null
+++ b/1172/CH3/EX3.12/3_12.txt
@@ -0,0 +1,5 @@
+# Problem 12 # 

+

+ Standard formula Used 

+ delta_p * delta_x >= h /(2*pi)

+ Uncertainty in momentum is 5.272803e-21 Kg-m/s. 

diff --git a/1172/CH3/EX3.12/Example3_12.sce b/1172/CH3/EX3.12/Example3_12.sce
new file mode 100755
index 000000000..0fe6556db
--- /dev/null
+++ b/1172/CH3/EX3.12/Example3_12.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+r = 1e-14 // radius of nucleus of atom in meter

+h = 6.626e-34 // Plank's constant

+//Sample Problem 12 page No. 140

+printf("\n\n\n # Problem 12 # \n")

+printf("\n Standard formula Used \n delta_p * delta_x >= h /(2*pi)")

+del_x = 2 * r //calculation of Uncertainty in position

+del_p = h / (2 * %pi * del_x) //calculation of Uncertainty in momentum

+printf ("\n Uncertainty in momentum is %e Kg-m/s. ", del_p )

+

diff --git a/1172/CH3/EX3.13/3_13.txt b/1172/CH3/EX3.13/3_13.txt
new file mode 100755
index 000000000..d871334ab
--- /dev/null
+++ b/1172/CH3/EX3.13/3_13.txt
@@ -0,0 +1,5 @@
+ # Problem 13 # 

+

+ Standard formula Used 

+ delta_p * delta_x >= h /(2*pi)

+ Uncertainty in position of electron is 1.923851 mm. 

diff --git a/1172/CH3/EX3.13/Example3_13.sce b/1172/CH3/EX3.13/Example3_13.sce
new file mode 100755
index 000000000..cb830a6c7
--- /dev/null
+++ b/1172/CH3/EX3.13/Example3_13.sce
@@ -0,0 +1,14 @@
+clc

+//Given that

+v = 300 // speed of electron in m/s

+accuracy = 1e-4 // accuracy in speed

+h = 6.6e-34 // Plank's constant

+m_e = 9.1e-31 // mass of electron in Kg

+//Sample Problem 13 page No. 140

+printf("\n\n\n # Problem 13 # \n")

+printf("\n Standard formula Used \n delta_p * delta_x >= h /(2*pi)")

+del_p =  accuracy * m_e * v  //calculation of Uncertainty in  momentum

+del_x = h / (4 * %pi * del_p)  //calculation of Uncertainty in position

+printf ("\n Uncertainty in position of electron is %f mm. ", del_x*1000 )

+

+

diff --git a/1172/CH3/EX3.14/3_14.txt b/1172/CH3/EX3.14/3_14.txt
new file mode 100755
index 000000000..fd28e4800
--- /dev/null
+++ b/1172/CH3/EX3.14/3_14.txt
@@ -0,0 +1,11 @@
+ # Problem 14 # 

+

+ Standard formula Used 

+

+ For Balmer Series 

+ 1/lambda =  R*(1-(1/n)^2) 

+

+ For Lyman series 

+ 1/lambda =  R*((1/2)^2 -(1/n)^2)

+ 

+Wavelength of first line of Lyman series is 1214.814815 Angstrom. 

diff --git a/1172/CH3/EX3.14/Example3_14.sce b/1172/CH3/EX3.14/Example3_14.sce
new file mode 100755
index 000000000..9c3653a2b
--- /dev/null
+++ b/1172/CH3/EX3.14/Example3_14.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+lambda1 = 6560 // wavelength in Angstrom

+n1 = 1 // transition state no

+n2 = 2 // transition state no

+n3 = 3 // transition state no.

+//Sample Problem 14 page No. 141

+printf("\n\n\n # Problem 14 # \n")

+printf("\n Standard formula Used \n\n For Balmer Series \n 1/lambda =  R*(1-(1/n)^2) \n\n For Lyman series \n 1/lambda =  R*((1/2)^2 -(1/n)^2)")

+lambda2 = (n2^2 * n1^2) *(n3^2 - n2^2) /( (n2^2 - n1^2) * (n3^2 * n2^2)) * lambda1  //calculation of Wavelength of first line of Lyman series

+printf ("\n \nWavelength of first line of Lyman series is %f Angstrom. ", lambda2 )

diff --git a/1172/CH3/EX3.15/3_15.txt b/1172/CH3/EX3.15/3_15.txt
new file mode 100755
index 000000000..537c797fd
--- /dev/null
+++ b/1172/CH3/EX3.15/3_15.txt
@@ -0,0 +1,7 @@
+

+ # Problem 15 # 

+

+ Standard formula Used 

+ f =  sqrt(k / m ) 

+ U = 1/2* h * nu 

+ Zero point energy of a linear harmonic oscillator  is 1.174408e-32 J.

diff --git a/1172/CH3/EX3.15/Example3_15.sce b/1172/CH3/EX3.15/Example3_15.sce
new file mode 100755
index 000000000..0f4573ed3
--- /dev/null
+++ b/1172/CH3/EX3.15/Example3_15.sce
@@ -0,0 +1,12 @@
+clc

+//Given that

+m = 2e-3 // mass of linear harmonic oscillator in kg

+k = 100 // spring constant in N/m

+h = 6.6e-34 // Plank's constant 

+//Sample Problem 15 page No. 142

+printf("\n\n\n # Problem 15 # \n")

+printf("\n Standard formula Used \n f =  sqrt(k / m ) \n U = 1/2* h * nu ")

+ nu = sqrt(k / m ) / (2 * %pi) //calculation of frequency of linear harmonic oscillator

+U = 1/2* h * nu //calculation of Zero point energy of a linear harmonic oscillator  

+printf ("\n Zero point energy of a linear harmonic oscillator  is %e J.", U )

+

diff --git a/1172/CH3/EX3.16.1/3_16a.txt b/1172/CH3/EX3.16.1/3_16a.txt
new file mode 100755
index 000000000..d908530d0
--- /dev/null
+++ b/1172/CH3/EX3.16.1/3_16a.txt
@@ -0,0 +1,6 @@
+

+ # Problem 16a # 

+

+ Standard formula Used 

+ For Lyman series 1/lambda = R*((1/2) ^2 - (1/n) ^2)

+ Wavelength of first line of Lyman series is 1215.436038 Angstrom. 

diff --git a/1172/CH3/EX3.16.1/Example3_16a.sce b/1172/CH3/EX3.16.1/Example3_16a.sce
new file mode 100755
index 000000000..93ba623b5
--- /dev/null
+++ b/1172/CH3/EX3.16.1/Example3_16a.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+R = 1.097 // Rydberg’s constant

+n1 = 1 // transition state no

+n2 = 2 // transition state no

+//Sample Problem 16a page No. 142

+printf("\n\n\n # Problem 16a # \n")

+printf ("\n Standard formula Used \n For Lyman series 1/lambda = R*((1/2) ^2 - (1/n) ^2)")

+nu1 = R * (n2^2 - n1^2) / (n1^2 * n2^2) //calculation of frequency of first line of Lyman series

+lambda1 = 1/ nu1//calculation of Wavelength of first line of Lyman series

+printf ("\n Wavelength of first line of Lyman series is %f Angstrom. ", lambda1 *1000)

diff --git a/1172/CH3/EX3.16.2/3_16b.txt b/1172/CH3/EX3.16.2/3_16b.txt
new file mode 100755
index 000000000..ce00d1377
--- /dev/null
+++ b/1172/CH3/EX3.16.2/3_16b.txt
@@ -0,0 +1,5 @@
+ # Problem 16b # 

+

+ Standard formula Used 

+ For Lyman series 1/lambda =  R*((1/2)^2 -(1/n)^2)

+ Wavelength of first line of Lyman series is 1025 Angstrom. 

diff --git a/1172/CH3/EX3.16.2/Example3_16b.sce b/1172/CH3/EX3.16.2/Example3_16b.sce
new file mode 100755
index 000000000..4151748f2
--- /dev/null
+++ b/1172/CH3/EX3.16.2/Example3_16b.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+R = 1.097 // Rydberg’s constant

+n1 = 1 // transition state no

+n2 = 3 // transition state no

+//Sample Problem 16b page No. 142

+printf("\n\n\n # Problem 16b # \n")

+printf("\n Standard formula Used \n For Lyman series 1/lambda =  R*((1/2)^2 -(1/n)^2)")

+nu1 = R * (n2^2 - n1^2) / (n1^2 * n2^2) //calculation of frequency of first line of Lyman series

+lambda1 = 1/ nu1 //calculation of Wavelength of first line of Lyman series

+printf ("\n Wavelength of second line of Lyman series is %d Angstrom. ", lambda1 *1000 )

diff --git a/1172/CH3/EX3.17/3_17.txt b/1172/CH3/EX3.17/3_17.txt
new file mode 100755
index 000000000..dd82ea421
--- /dev/null
+++ b/1172/CH3/EX3.17/3_17.txt
@@ -0,0 +1,6 @@
+

+ # Problem 17 # 

+

+ Standard formula Used 

+ lambda * T = constant

+ Blackbody will emit  wavelength 1.4e-5 cm at 20727 K.

diff --git a/1172/CH3/EX3.17/Example3_17.sce b/1172/CH3/EX3.17/Example3_17.sce
new file mode 100755
index 000000000..2a70104c9
--- /dev/null
+++ b/1172/CH3/EX3.17/Example3_17.sce
@@ -0,0 +1,10 @@
+clc

+//Given that

+lambda1 = 4700 // wavelength in Angstrom

+lambda2 = 1.4e-5//wavelength in cm 

+temp1 = 6174 // temperature of a black of in kelvin

+//Sample Problem 17 page No. 143

+printf("\n\n\n # Problem 17 # \n")

+printf("\n Standard formula Used \n lambda * T = constant")

+temp2 = lambda1 * temp1 / (lambda2 * 1e8) //calculation of temperature

+printf ("\n Blackbody will emit  wavelength 1.4e-5 cm at %d K.",  temp2 )

diff --git a/1172/CH3/EX3.19.1/3_19a.txt b/1172/CH3/EX3.19.1/3_19a.txt
new file mode 100755
index 000000000..c97198940
--- /dev/null
+++ b/1172/CH3/EX3.19.1/3_19a.txt
@@ -0,0 +1,6 @@
+

+ # Problem 19a # 

+

+ Standard formula Used 

+ delta_lambda = h * (1 - cos (theta )) / ( m_e * c)

+ Change in frequency  is 0.024259 Hz.
\ No newline at end of file
diff --git a/1172/CH3/EX3.19.1/Example3_19a.sce b/1172/CH3/EX3.19.1/Example3_19a.sce
new file mode 100755
index 000000000..d691e25fa
--- /dev/null
+++ b/1172/CH3/EX3.19.1/Example3_19a.sce
@@ -0,0 +1,14 @@
+clc

+//Given that

+lambda = 1 // wavelength in Angstrom

+theta = 90 // angle of scattered photon in degree

+m_e = 9.11e-31 // mass of electron in Kg

+c = 3e8 // speed of light in m/s

+h = 6.63e-34 // plank's constant

+//Sample Problem 19a page No. 144

+printf("\n\n\n # Problem 19a # \n")

+printf("\n Standard formula Used \n delta_lambda = h * (1 - cos (theta )) / ( m_e * c)")

+lambda_shift = h *(1 - cos(theta * %pi / 180))/ ( m_e * c) //calculation of Change in frequency  

+printf ("\n Change in frequency  is %f Hz. ", lambda_shift * 1e10)

+

+

diff --git a/1172/CH3/EX3.19.2/3_19b.txt b/1172/CH3/EX3.19.2/3_19b.txt
new file mode 100755
index 000000000..77aa036a6
--- /dev/null
+++ b/1172/CH3/EX3.19.2/3_19b.txt
@@ -0,0 +1,5 @@
+ # Problem 19b # 

+

+ Standard formula Used 

+ E= h *(nu1 – nu2)

+ Kinetic energy imparted to recoiling electron is 294 eV.

diff --git a/1172/CH3/EX3.19.2/Example3_19b.sce b/1172/CH3/EX3.19.2/Example3_19b.sce
new file mode 100755
index 000000000..4a5ce27ba
--- /dev/null
+++ b/1172/CH3/EX3.19.2/Example3_19b.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+lambda1 = 1 // wavelength in Angstrom

+lambda2 = 1.0243 // wavelength in Angstrom

+c = 3e8 // speed of light in m/s

+h = 6.63e-34 // plank's constant

+//Sample Problem 19b page No. 144

+printf("\n\n\n # Problem 19b # \n")

+printf("\n Standard formula Used \n E= h *(nu1 – nu2)")

+K = h * c * (( lambda2 - lambda1 )/ (lambda1 * lambda2 )) *(10e9 / 1.6e-19)   //calculation of Kinetic energy imparted to recoiling

+printf ("\n Kinetic energy imparted to recoiling electron is %d eV.", K)

diff --git a/1172/CH3/EX3.2/3_2.txt b/1172/CH3/EX3.2/3_2.txt
new file mode 100755
index 000000000..fff0eefec
--- /dev/null
+++ b/1172/CH3/EX3.2/3_2.txt
@@ -0,0 +1,5 @@
+ # Problem 2 # 

+

+ Standard formula Used 

+ E = h * (nu1 – nu2)

+ Energy of photoelectrons emitted is 1.031250  eV

diff --git a/1172/CH3/EX3.2/Example3_2.sce b/1172/CH3/EX3.2/Example3_2.sce
new file mode 100755
index 000000000..66e00d4e6
--- /dev/null
+++ b/1172/CH3/EX3.2/Example3_2.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+h = 6.6e-34 // plank's constant

+lambda_threshold = 2.4e-7 // threshold wavelength in cm

+lambda = 2e-7 // wavelength of irradicated light in photo emmission

+c = 3e8

+//Sample Problem 2 Page No. 135

+printf("\n # Problem 2 # \n")

+printf("\n Standard formula Used \n E = h * (nu1 – nu2)")

+E = h * c * ((lambda_threshold - lambda)/(lambda *lambda_threshold))/1.6e-19 // calculation of nergy of photoelectrons

+printf("\n Energy of photoelectrons emitted is %f  eV", E)

diff --git a/1172/CH3/EX3.20/3_20.txt b/1172/CH3/EX3.20/3_20.txt
new file mode 100755
index 000000000..4252d9539
--- /dev/null
+++ b/1172/CH3/EX3.20/3_20.txt
@@ -0,0 +1,5 @@
+ # Problem 20 # 

+

+ Standard formula Used 

+ delta_lambda = h * (1 - cos (theta )) / ( m_e * c)

+ wavelength of scattered photon is  1.049186e-03 Angstrom. 

diff --git a/1172/CH3/EX3.20/Example3_20.sce b/1172/CH3/EX3.20/Example3_20.sce
new file mode 100755
index 000000000..938d91570
--- /dev/null
+++ b/1172/CH3/EX3.20/Example3_20.sce
@@ -0,0 +1,15 @@
+clc

+//Given that

+theta = 90 // angle of scattered photon in degree

+E_rest = 938.3 // rest mass energy of a proton in MeV

+E = 12// energy of scattered proton in Mev

+c = 3e8 // speed of light in m/s

+h = 6.63e-34 // plank's constant

+//Sample Problem 20 page No. 145

+printf("\n\n\n # Problem 20 # \n")

+printf("\n Standard formula Used \n delta_lambda = h * (1 - cos (theta )) / ( m_e * c)")

+lambda = h * c / ( E * 1.6e-13) //calculation of incident wavelength

+lambda1 = lambda + h * c / (E_rest * 1.6e-13)    //calculation of wavelength of scattered photon

+printf ("\n wavelength of scattered photon is  %e Angstrom. ", lambda1 * 1e10)

+

+

diff --git a/1172/CH3/EX3.21/3_21.txt b/1172/CH3/EX3.21/3_21.txt
new file mode 100755
index 000000000..58e7b0b6c
--- /dev/null
+++ b/1172/CH3/EX3.21/3_21.txt
@@ -0,0 +1,5 @@
+ # Problem 21 # 

+

+ Standard formula Used 

+ sqrt(nu1)= a*(Z-b)

+ The unknown substance has atomic number 47. 

diff --git a/1172/CH3/EX3.21/Example3_21.sce b/1172/CH3/EX3.21/Example3_21.sce
new file mode 100755
index 000000000..dc3334cc6
--- /dev/null
+++ b/1172/CH3/EX3.21/Example3_21.sce
@@ -0,0 +1,14 @@
+clc

+//Given that

+lambda1 = 1.321 // wavelength of L- alpha line for platinum

+lambda2 = 4.174 // wavelength of l - alpha line of unknown substance 

+z1= 78// atomic number of platinum

+c = 3e8 // speed of light in m/s

+b = 7.4 // constant  for L - alpha line

+//Sample Problem 21 page No. 146

+printf("\n\n\n # Problem 21 # \n")

+printf("\n Standard formula Used \n sqrt(nu1)= a*(Z-b)")

+z2 = b + (z1 - b) * sqrt(lambda1 / lambda2) //calculation of the unknown substance has atomic number

+printf ("\n The unknown substance has atomic number %d. ", z2)

+

+

diff --git a/1172/CH3/EX3.22/3_22.txt b/1172/CH3/EX3.22/3_22.txt
new file mode 100755
index 000000000..6fd3570a2
--- /dev/null
+++ b/1172/CH3/EX3.22/3_22.txt
@@ -0,0 +1,16 @@
+ # Problem 22 # 

+

+ Standard formula Used 

+ E= h^2 * (n_x^2+n_y^2+n_z^2) / (8*m*L^2)Warning : redefining function: sum                     . Use funcprot(0) to avoid this message

+

+

+ 

+ E111 is  112.190934 eV. 

+ 

+ E112 is  224.381868 eV. 

+ 

+ E211 is  224.381868 eV. 

+ 

+ E212 is  336.572802 eV. 

+ 

+ E311 is  411.366758 eV. 

diff --git a/1172/CH3/EX3.22/Example3_22.sce b/1172/CH3/EX3.22/Example3_22.sce
new file mode 100755
index 000000000..e9c7d0f74
--- /dev/null
+++ b/1172/CH3/EX3.22/Example3_22.sce
@@ -0,0 +1,24 @@
+clc

+//Given that

+h = 6.6e-34 // plank's constant

+m_e = 9.1e-31 // mass of electron in kg

+L = 1e-10 // length of box of particle in m

+//Sample Problem 22 page No. 146

+printf("\n # Problem 22 # \n")

+printf("\n Standard formula Used \n E= h^2 * (n_x^2+n_y^2+n_z^2) / (8*m*L^2)")

+sum = 0 

+n_y = 1

+    for n_x = 1:3

+        

+            for n_z = 1:2

+                sum = n_x+n_y+n_z

+                if sum<6 then

+                     E = h^2 * (n_x^2+n_y^2+n_z^2)/ (1.6e-19*8*m_e*L^2) // calculation of energy

+                printf("\n \n E%d%d%d is  %f eV. ",n_x,n_y,n_z,E)

+                end

+               

+                

+            

+        end

+    end

+

diff --git a/1172/CH3/EX3.3/3_3.txt b/1172/CH3/EX3.3/3_3.txt
new file mode 100755
index 000000000..d79debeab
--- /dev/null
+++ b/1172/CH3/EX3.3/3_3.txt
@@ -0,0 +1,5 @@
+ # Problem 3 # 

+

+ Standard formula Used 

+ E = h*c/lambda

+ Shortest wavelength emitted is 0.310500 Angstrom.

diff --git a/1172/CH3/EX3.3/Example3_3.sce b/1172/CH3/EX3.3/Example3_3.sce
new file mode 100755
index 000000000..d238a255a
--- /dev/null
+++ b/1172/CH3/EX3.3/Example3_3.sce
@@ -0,0 +1,11 @@
+clc

+//Given that

+applied_voltage = 4e4 // in volt

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+e = 1.6e-19 // charge on electron

+//Sample Problem 3 Page No. 136

+printf("\n\n\n # Problem 3 # \n")

+printf("\n Standard formula Used \n E = h*c/lambda")

+lambda = h * c / ( e * applied_voltage) *1e10 //calculation of Shortest wavelength emitted

+printf("\n Shortest wavelength emitted is %f Angstrom.", lambda)

diff --git a/1172/CH3/EX3.4/3_4.txt b/1172/CH3/EX3.4/3_4.txt
new file mode 100755
index 000000000..5f45ee3ff
--- /dev/null
+++ b/1172/CH3/EX3.4/3_4.txt
@@ -0,0 +1,5 @@
+ # Problem 4 # 

+

+ Standard formula Used 

+ E =(1/2)*m *v^2

+ Velocity of moving electron is 1.875229e+07  m/s.

diff --git a/1172/CH3/EX3.4/Example3_4.sce b/1172/CH3/EX3.4/Example3_4.sce
new file mode 100755
index 000000000..0224ffd49
--- /dev/null
+++ b/1172/CH3/EX3.4/Example3_4.sce
@@ -0,0 +1,13 @@
+clc

+//Given that

+E = 1e3 // energy of moving electron in eV

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+e = 1.6e-19 // charge on electron

+m_e = 9.1e-31

+//Sample Problem 4 Page No. 136

+printf("\n\n\n # Problem 4 # \n")

+printf("\n Standard formula Used \n E =(1/2)*m *v^2")

+v = sqrt(2 * E * 1.6e-19/ m_e) //calculation of Velocity of moving electron

+printf("\n Velocity of moving electron is %e  m/s.", v)

+

diff --git a/1172/CH3/EX3.5/3_5.txt b/1172/CH3/EX3.5/3_5.txt
new file mode 100755
index 000000000..88efc0129
--- /dev/null
+++ b/1172/CH3/EX3.5/3_5.txt
@@ -0,0 +1,5 @@
+ # Problem 5 # 

+

+ Standard formula Used 

+ phi = h * nu

+ Longest wavelength to eject electron is 2070  Angstroms. 

diff --git a/1172/CH3/EX3.5/Example3_5.sce b/1172/CH3/EX3.5/Example3_5.sce
new file mode 100755
index 000000000..1593d4077
--- /dev/null
+++ b/1172/CH3/EX3.5/Example3_5.sce
@@ -0,0 +1,13 @@
+clc

+//Given that

+phi = 6 // work function in eV

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+e = 1.6e-19 // charge on electron

+m_e = 9.1e-31

+//Sample Problem 5 Page No. 137

+printf("\n\n\n # Problem 5 # \n")

+printf("\n Standard formula Used \n phi = h * nu")

+lambda = h * c / (phi * e) * 1e10//calculation of Longest wavelength to eject electron

+printf("\n Longest wavelength to eject electron is %d  Angstroms. ", lambda)

+

diff --git a/1172/CH3/EX3.6/3_6.txt b/1172/CH3/EX3.6/3_6.txt
new file mode 100755
index 000000000..0ddd80fb0
--- /dev/null
+++ b/1172/CH3/EX3.6/3_6.txt
@@ -0,0 +1,5 @@
+ # Problem 6 # 

+

+ Standard formula Used 

+ delta_lambda = h * (1 - cos (theta )) / ( m_e * c)

+ Change in wavelength of electron is 0.024264  Angstrom. 

diff --git a/1172/CH3/EX3.6/Example3_6.sce b/1172/CH3/EX3.6/Example3_6.sce
new file mode 100755
index 000000000..0f6211a15
--- /dev/null
+++ b/1172/CH3/EX3.6/Example3_6.sce
@@ -0,0 +1,12 @@
+clc

+//Given that

+theta = %pi/2 // scattering angle of photon

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+e = 1.6e-19 // charge on electron in coloumb

+m_e = 9.1e-31 // mass of electron in kg

+//Sample Problem 6 Page No. 137

+printf("\n\n\n # Problem 6 # \n")

+printf("\n Standard formula Used \n delta_lambda = h * (1 - cos (theta )) / ( m_e * c)")

+delta_lambda = h * (1 - cos (theta )) /( m_e * c) //calculation of Change in wavelength of electron

+printf("\n Change in wavelength of electron is %f  Angstrom. ", delta_lambda*1e10)

diff --git a/1172/CH3/EX3.7/3_7.txt b/1172/CH3/EX3.7/3_7.txt
new file mode 100755
index 000000000..345639212
--- /dev/null
+++ b/1172/CH3/EX3.7/3_7.txt
@@ -0,0 +1,7 @@
+ # Problem 7 # 

+

+ Standard formula Used 

+ lambda = h / (m * v)

+ de Broglie wavelength of particle is 3.312000e-37  m.

+ Here the de Broglie wavelength is too small to be detected. This wavelength is far smaller than the wavelength of X ray.

+ Hence diffraction experiment with such a stream of particle will not be successful.

diff --git a/1172/CH3/EX3.7/Example3_7.sce b/1172/CH3/EX3.7/Example3_7.sce
new file mode 100755
index 000000000..ec6a7c53a
--- /dev/null
+++ b/1172/CH3/EX3.7/Example3_7.sce
@@ -0,0 +1,14 @@
+clc

+//Given that

+angle = %pi/2 // scattering angle of photon

+h = 6.624e-34 // plank's constant

+v = 2e6 // speed of particle

+e = 1.6e-19 // charge on electron

+m = 1e-3 // mass of particle in kg

+//Sample Problem 7 Page No. 137

+printf("\n\n\n # Problem 7 # \n")

+printf("\n Standard formula Used \n lambda = h / (m * v)")

+lambda = h / (m * v) //calculation of de Broglie wavelength of particle

+printf("\n de Broglie wavelength of particle is %e  m.", lambda)

+printf("\n Here the de Broglie wavelength is too small to be detected. This wavelength is far smaller than the wavelength of X ray.\n Hence diffraction experiment with such a stream of particle will not be successful.")

+

diff --git a/1172/CH3/EX3.8.1/3_8a.txt b/1172/CH3/EX3.8.1/3_8a.txt
new file mode 100755
index 000000000..66dbfcb04
--- /dev/null
+++ b/1172/CH3/EX3.8.1/3_8a.txt
@@ -0,0 +1,4 @@
+ # Problem 8a # 

+

+ As the threshold wavelength is less than wavelength of incident radiation 

+ So electron will not be ejected 

diff --git a/1172/CH3/EX3.8.1/Example3_8a.sce b/1172/CH3/EX3.8.1/Example3_8a.sce
new file mode 100755
index 000000000..c9f0577ec
--- /dev/null
+++ b/1172/CH3/EX3.8.1/Example3_8a.sce
@@ -0,0 +1,17 @@
+clc

+//Given that

+lambda = 4.3e-7 // wavelength of light in meter

+phi_Ni = 5 // work function of nickel in eV

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+m_e = 9.1e-31 // mass of electron in kg

+//Sample Problem 8a Page No. 138

+printf("\n\n\n # Problem 8a # \n")

+lambda_threshold = h * c / (phi_Ni*1e-19) //calculation of longest wavelength required

+if (lambda_threshold < lambda) then

+    printf("\n As the threshold wavelength is less than wavelength of incident radiation \n So electron will not be ejected \n")

+else 

+    v = sqrt((2* h * c *(lambda - lambda_threshold)) / (m * lambda_threshold * lambda ))) //calculation of ejected velocity Electron

+    printf("\n As the threshold wavelength is greater than wavelength of incident radiation So electron will be ejected with velocity %e. ",v)

+end

+

diff --git a/1172/CH3/EX3.8.2/3_8b.txt b/1172/CH3/EX3.8.2/3_8b.txt
new file mode 100755
index 000000000..04893291b
--- /dev/null
+++ b/1172/CH3/EX3.8.2/3_8b.txt
@@ -0,0 +1,4 @@
+ # Problem 8b # 

+

+ As the threshold wavelength is greater than wavelength of incident radiation So 

+ electron will be ejected with velocity 4.548627e+05 m/s. 

diff --git a/1172/CH3/EX3.8.2/Example3_8b.sce b/1172/CH3/EX3.8.2/Example3_8b.sce
new file mode 100755
index 000000000..914433ff5
--- /dev/null
+++ b/1172/CH3/EX3.8.2/Example3_8b.sce
@@ -0,0 +1,16 @@
+clc

+//Given that

+lambda = 4.3e-7 // wavelength of light in meter

+phi_K = 2.3 // work function of nickel in eV

+h = 6.624e-34 // plank's constant

+c = 3e8 // speed of light

+m_e = 9.1e-31 // mass of electron in kg

+//Sample Problem 8b Page No. 138

+printf("\n\n\n # Problem 8b # \n")

+lambda_threshold = h * c / (phi_K *1.6e-19) //calculation of longest wavelength required

+if (lambda_threshold < lambda) then

+    printf("As the threshold wavelength is less than wavelength of incident radiation Solectron will not be ejected \n")

+else 

+    v = sqrt((2* h * c *( lambda_threshold - lambda)) / (m_e * lambda_threshold * lambda )) //calculation of ejected velocity Electron

+    printf("\n As the threshold wavelength is greater than wavelength of incident radiation So \n electron will be ejected with velocity %e m/s. ",v)

+end

diff --git a/1172/CH3/EX3.9/3_9.txt b/1172/CH3/EX3.9/3_9.txt
new file mode 100755
index 000000000..c05832618
--- /dev/null
+++ b/1172/CH3/EX3.9/3_9.txt
@@ -0,0 +1,5 @@
+ # Problem 9 # 

+

+ Standard formula Used 

+ 2 * d * sin(theta) = n * lambda 

+ Second order brags reflection occurs at 14.700000 degree for the wavelength 0.771424 Angstrom

diff --git a/1172/CH3/EX3.9/Example3_9.sce b/1172/CH3/EX3.9/Example3_9.sce
new file mode 100755
index 000000000..f2e0eebf7
--- /dev/null
+++ b/1172/CH3/EX3.9/Example3_9.sce
@@ -0,0 +1,12 @@
+clc

+//Given that

+d = 3.04 // inter layer separation in Angstrom

+theta = 14.7 // in degree

+n = 2 // order of brags reflection

+//Sample Problem  Page No. 139

+printf("\n\n\n # Problem 9 # \n")

+printf("\n Standard formula Used \n 2 * d * sin(theta) = n * lambda")

+lambda = 2 * d * sin( theta * (%pi /180))/ n   //calculation of wavelength making second order Braggs reflection

+printf ( " \n Second order brags reflection occurs at %f degree for the wavelength %f Angstrom\n" , theta , lambda)

+

+