17 files changed, 134 insertions, 0 deletions
diff --git a/1427/CH19/EX19.1/19_1.sce b/1427/CH19/EX19.1/19_1.sce
new file mode 100644
index 000000000..23d187aac
--- /dev/null
+++ b/1427/CH19/EX19.1/19_1.sce
@@ -0,0 +1,8 @@
+//ques-19.1
+//Calculating de Broglie wavelength of alpha particles
+clc
+E=100;//energy (in Mev)
+h=6.626*10^-27;//erg sec
+c=3*10^8;//speed of light (in m/s)
+w=(h*c)/(E*1.602*10^-6);
+printf("The wavelength of alpha particles is %.7f nm.",w*10^9);
diff --git a/1427/CH19/EX19.10/19_10.sce b/1427/CH19/EX19.10/19_10.sce
new file mode 100644
index 000000000..74040b994
--- /dev/null
+++ b/1427/CH19/EX19.10/19_10.sce
@@ -0,0 +1,8 @@
+//ques-19.10
+//Calculating wavelength of radiation emitted
+clc
+E=1.76*10^-18;//energy absorbed (in J)
+c=3*10^8;//speed of light (in m/s)
+h=6.6*10^-34;//(in Js)
+w=(h*c)/E;
+printf("The wavelength of the radiation emitted is %.1f nm.",w*10^9);
diff --git a/1427/CH19/EX19.11/19_11.sce b/1427/CH19/EX19.11/19_11.sce
new file mode 100644
index 000000000..7c0128b41
--- /dev/null
+++ b/1427/CH19/EX19.11/19_11.sce
@@ -0,0 +1,8 @@
+//ques-19.11
+//Calculating wavelength of a tennis ball
+clc
+m=6*10^-2;//mass of ball (in kg)
+v=62;//velocity (in m/s)
+h=6.63*10^-34;//(in Js)
+w=h/(m*v);
+printf("The wavelength of the tennis ball is %.2f*10^-34 m.",w*10^34);
diff --git a/1427/CH19/EX19.12/19_12.sce b/1427/CH19/EX19.12/19_12.sce
new file mode 100644
index 000000000..ac0f46225
--- /dev/null
+++ b/1427/CH19/EX19.12/19_12.sce
@@ -0,0 +1,8 @@
+//ques-19.12
+//Calculating de Broglie wavelength of a moving electron
+clc
+KE=4.9*10^-25;//kinetic energy (in J)
+m=9.1*10^-31;//mass of electron (in kg)
+h=6.6*10^-34;//(in Js)
+w=h/sqrt(2*KE*m);
+printf("The de-Broglie wavelength of the moving electron is %.0f nm.",w*10^9);
diff --git a/1427/CH19/EX19.13/19_13.sce b/1427/CH19/EX19.13/19_13.sce
new file mode 100644
index 000000000..5f5f269e6
--- /dev/null
+++ b/1427/CH19/EX19.13/19_13.sce
@@ -0,0 +1,7 @@
+//ques-19.13
+//Calculating uncertainity in momentum of an electron
+clc
+x=10^-10;//uncertainity in position (in m)
+h=6.6*10^-34;//(in Js)
+p=h/(4*%pi*x);
+printf("The uncertainity in momentum is %.2f*10^-25 kg m/s.",p*10^25);
diff --git a/1427/CH19/EX19.14/19_14.sce b/1427/CH19/EX19.14/19_14.sce
new file mode 100644
index 000000000..981228ac0
--- /dev/null
+++ b/1427/CH19/EX19.14/19_14.sce
@@ -0,0 +1,10 @@
+//ques-19.14
+//Determining minimum error in finding position of an electron
+clc
+v=600;//speed of electron (in m/s)
+a=0.005;//percentage accuracy in speed
+dv=v*(a/100);//uncertainity in speed
+m=9.1*10^-31;//mass of electron (in kg)
+h=6.6*10^-34;//(in Js)
+dx=h/(4*%pi*m*dv);
+printf("The uncertainity in determining position of the electron is %.5f m.",dx);
diff --git a/1427/CH19/EX19.15/19_15.sce b/1427/CH19/EX19.15/19_15.sce
new file mode 100644
index 000000000..2e56f9e7c
--- /dev/null
+++ b/1427/CH19/EX19.15/19_15.sce
@@ -0,0 +1,9 @@
+//ques-19.15
+//Calculating uncertainity in velocity of an electron
+clc
+m=9.11*10^-31;//mass of electron (in kg)
+dx=10;//uncertainity in position (in pm)
+h=6.6*10^-34;//(in Js)
+dv=h/(4*%pi*m*dx*10^-12);
+printf("The uncertainity in velocity of the electron is %d m/s.",dv);
+
diff --git a/1427/CH19/EX19.16/19_16.sce b/1427/CH19/EX19.16/19_16.sce
new file mode 100644
index 000000000..13d4d1080
--- /dev/null
+++ b/1427/CH19/EX19.16/19_16.sce
@@ -0,0 +1,8 @@
+//ques-19.16
+//Calculating uncertainity in velocity of a cricket ball
+clc
+m=0.1;//mass of ball (in kg)
+dx=100;//uncertainity in position (in pm)
+h=6.6*10^-34;//(in Js)
+dv=h/(4*%pi*m*dx*10^-12);
+printf("The uncertainity in velocity of the ball is %.2f*10^-24 m/s.",dv*10^24);
diff --git a/1427/CH19/EX19.17/19_17.sce b/1427/CH19/EX19.17/19_17.sce
new file mode 100644
index 000000000..41c301fd9
--- /dev/null
+++ b/1427/CH19/EX19.17/19_17.sce
@@ -0,0 +1,8 @@
+//ques-19.17
+//Calculating mass of a particle
+clc
+dx=9.54*10^-10;//uncertainity in position (in m)
+dv=5.5*10^-20;//uncertainity in velocity (in m/s)
+h=6.6*10^-34;//(in Js)
+m=h/(4*%pi*dx*dv);
+printf("The mass of the particle is %d mg.",m*10^6);
diff --git a/1427/CH19/EX19.2/19_2.sce b/1427/CH19/EX19.2/19_2.sce
new file mode 100644
index 000000000..ed31af4e0
--- /dev/null
+++ b/1427/CH19/EX19.2/19_2.sce
@@ -0,0 +1,6 @@
+//ques-19.2
+//Calculating energy per photon for a radiation
+clc
+w=650;//wavelength (in pm)
+E=(6.626*10^-34*3*10^8)/(w*10^-12);
+printf("The energy per photon for the radiation is %.3f*10^-16 J.",E*10^16);
diff --git a/1427/CH19/EX19.3/19_3.sce b/1427/CH19/EX19.3/19_3.sce
new file mode 100644
index 000000000..cdec24abb
--- /dev/null
+++ b/1427/CH19/EX19.3/19_3.sce
@@ -0,0 +1,7 @@
+//ques-19.3
+//Calculating momentum of a particle
+clc
+v=6.5*10^7;//velocity (in m/s)
+w=5*10^-11;//wavelength (in m)
+p=(6.625*10^-34)/w;
+printf("The momentum of the particle is %.2f*10^-23 kg m/s.",p*10^23);
diff --git a/1427/CH19/EX19.4/19_4.sce b/1427/CH19/EX19.4/19_4.sce
new file mode 100644
index 000000000..abe8afb03
--- /dev/null
+++ b/1427/CH19/EX19.4/19_4.sce
@@ -0,0 +1,6 @@
+//ques-19.4
+//Calculating momentum of a particle
+clc
+w=10^-10;//wavelength (in m)
+p=(6.625*10^-34)/w;
+printf("The momentum of the particle is %.3f*10^-24 kg m/s.",p*10^24)
diff --git a/1427/CH19/EX19.5/19_5.sce b/1427/CH19/EX19.5/19_5.sce
new file mode 100644
index 000000000..61fa79dac
--- /dev/null
+++ b/1427/CH19/EX19.5/19_5.sce
@@ -0,0 +1,7 @@
+//ques-19.5
+//Calculating wavelength of a moving electron
+clc
+KE=4.55*10^-25;//kinetic energy (in J)
+v=sqrt((2*KE)/(9.1*10^-31));
+w=(6.6*10^-34)/(9.1*10^-31*v);
+printf("The wavelength of the electron is %.0f nm.",w*10^9);
diff --git a/1427/CH19/EX19.6/19_6.sce b/1427/CH19/EX19.6/19_6.sce
new file mode 100644
index 000000000..e017c6f4c
--- /dev/null
+++ b/1427/CH19/EX19.6/19_6.sce
@@ -0,0 +1,8 @@
+//ques-19.6
+//Determining number of photons of light required
+clc
+w=400;//wavelength (in nm)
+E1=1;//energy required (in J)
+E=(6.63*10^-34*3*10^8)/(w*10^-9);//energy of 1 photon (in J)
+n=E1/E;
+printf("The number of photons of light are %.2f*10^18.",n*10^-18);
diff --git a/1427/CH19/EX19.7/19_7.sce b/1427/CH19/EX19.7/19_7.sce
new file mode 100644
index 000000000..2d37a7457
--- /dev/null
+++ b/1427/CH19/EX19.7/19_7.sce
@@ -0,0 +1,10 @@
+//ques-19.7
+//Calculating ionization energy of sodium atom
+clc
+w=242;//wavelength (in nm)
+c=3*10^8;//speed of light (in m/s)
+h=6.626*10^-34;//(in Js)
+Na=6.023*10^23;//(in atom/mol)
+IE=(h*c)/(w*10^-9);//IE in J/atom
+IE=IE*Na;//IE in J/mol
+printf("The ionization energy of sodium atom is %d kJ.",IE/1000);
diff --git a/1427/CH19/EX19.8/19_8.sce b/1427/CH19/EX19.8/19_8.sce
new file mode 100644
index 000000000..85a8b3610
--- /dev/null
+++ b/1427/CH19/EX19.8/19_8.sce
@@ -0,0 +1,7 @@
+//ques-19.8
+//Calculating frequency of a particle wave
+clc
+KE=5.85*10^-25;//kinetic energy (in J)
+h=6.6*10^-34;//(in Js)
+f=(2*KE)/h;
+printf("The frequency of the particle wave is %d Hz.",f);
diff --git a/1427/CH19/EX19.9/19_9.sce b/1427/CH19/EX19.9/19_9.sce
new file mode 100644
index 000000000..b5217da38
--- /dev/null
+++ b/1427/CH19/EX19.9/19_9.sce
@@ -0,0 +1,9 @@
+//ques-19.9
+//Calculating kinetic energy of a moving electron
+clc
+w=4.8;//wavelength (in pm)
+m=9.11*10^-31;//mass of electron (in kg)
+h=6.63*10^-34;//(in Js)
+v=h/(m*w*10^-12);//velocity of electron (in m/s)
+KE=(1/2)*m*v^2;
+printf("The kinetic energy of the electron is %.3f*10^-14 J.",KE*10^14);