Physics-
General
Easy
Question
A ray of light is incident on a thin film. As shown in figure M, N are two reflected rays and P, Q are two transmitted rays, Rays N and Q undergo a phase change of 
. Correct ordering of the refracting indices is :
- none of these, the specified changes can not occur
The correct answer is:
There is a phase change of p when the ray enters from rarer medium into denser medium, the boundary is called rigid boundary and also no change in phase when it enters into rarer medium.
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