Chapter 27 Polarisation of light

Example 27.1 Page no 758

In [5]:
#Given
u=1.536

#Calculation
import math
p=math.atan(u)*180/3.14
r=90-p

#Result
print"Angle of refraction is", round(r,1),"degree"

Angle of refraction is 33.0 degree

Example 27.2 Page no 758

In [24]:
#Given
p=60                 #degree

#Calculation
import math
u=math.tan(p*3.14/180.0)
C=1/u
C1=math.asin(C)*180/3.14

#Result
print"Critical angle is", round(C1,1),"Degree"

Critical angle is 35.3 Degree

Example 27.3 Page no 758

In [30]:
#Given
a=60                     #degree
b=100

#Calculation
import math
a1=90-a
A=a/2.0
I=(math.cos(A*3.14/180.0)**2)/2.0
I0=b*I

#result
print"Unpolarised light is", round(I0,1),"%"

Unpolarised light is 37.5 %