initial commit / add all books

2 files changed, 30 insertions, 0 deletions

diff --git a/3875/CH10/EX10.13/10_13.sce b/3875/CH10/EX10.13/10_13.sce
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+clc;

+clear;

+h=6.63*10^-34 //Plancks constant in J-s

+v=3*10^8 // frequency of light in Hz

+e=1.6*10^-19 //charge in C

+lambda=200*10^-9 //wavelength in m

+W=4.2 //work function in Joule

+c=3*10^8 //velocity of light in m/s

+

+//calculation 

+E=(h*v)/(lambda)//energy in J

+E_v=E/e //energy in eV

+

+//case (1)

+E_k=E_v-W

+mprintf("\nThe kinetic energy of the fastest electrons is = %d eV\n",E_k)

+

+//case(2)

+mprintf("\nThe kinetic energy of slowest electrons is zero.As the emitted electrons have all possible energies from 0 to certain maximun value is E_k\n")

+

+//case(3)

+mprintf("If V_s is the stopping potential then E_k=e*V_s.Since the electrons have a maximum kinetoc energy of 2eV,the stopping potential is 2V.\n")

+

+//case(4)

+lambda_0=(h*c)/(W*e)

+mprintf("The cut off wavelength for aluminium is %1.2e m",lambda_0) //The answer provided in the textbook is wrong.

diff --git a/3875/CH10/EX10.13/10_13.txt b/3875/CH10/EX10.13/10_13.txt
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+The kinetic energy of the fastest electrons is = 2 eV

+The kinetic energy of slowest electrons is zero.As the emitted electrons have all possible energies from 0 to certain maximun value is E_k

+If V_s is the stopping potential then E_k=e*V_s.Since the electrons have a maximum kinetoc energy of 2eV,the stopping potential is 2V.

+The cut off wavelength for aluminium is 2.96e-07 m
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