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When a ray of light enters a glass slab ...

When a ray of light enters a glass slab from air

A

its wavelength decreases

B

its wavelength increases

C

its frequency increases

D

neither its wavelength nor its frequency changes

Text Solution

Verified by Experts

The correct Answer is:
A
Wavelength,%=`("Velocity")/("Frequency")=u/v`
When light travels from air to glass, frequency v remains unchanged, velocity u decreases and hence wavelength X also decreases.
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