An electromagnetic radiation of frequenc...

An electromagnetic radiation of frequency v ,wave-length `gamma`,travelling with velocity c in air ,enters a glass slab of refractive index `mu`.the frequency,wavelegth and velocity of light in the glass slab will be respectively

A

v chnges

B

v does not chagne,`lambda` changes

C

`lambda` does not change.

D

v and `lambda` change.

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