The X-Y plane be taken as the boundary between two transparent media mi and M 2 . M 1 in Z 
0 has a refractive index of 
and M 2 with Z < 0 has a refractive index of 
. A ray of light travelling in M 1 along the direction given by the vector 
, is incident on the plane of separation. The value of difference between the angle of incident in M 1 and the angle of refraction in M 2 will be___________ degree.
Text Solution
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(15)
As incident vector A makes i angle with normal z-axis & refracted vector R makes r angle with normal z - axis with help of direction cosine
Difference between i &r =60-45 = 15
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