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The phase difference between incident wa...

The phase difference between incident wave and reflected wave is `180^@` when light ray

A

strikes glass from air

B

strikes air from glass

C

strikes glass from diamond

D

strikes water from glass

Text Solution

Verified by Experts

The correct Answer is:
A
When a wave is reflected from a denser medium , a phase change of `pi` or `180^(@)` is introduced between the incident and reflected waves. This happens when the ray in air strikes the glass surface. In the remaining three cases it travels from a denser to a rarer medium.
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MARVEL PUBLICATION-WAVE THEORY OF LIGHT AND POLARISATION -TEST YOUR GRASP -10
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