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Fig. shows a surface XY separating two t...

Fig. shows a surface XY separating two transparent media, medium 1 and medium 2. Lines ab and cd represent wavefronts of a light wave travelling in medium 1 and incident on XY. Line ef and gh represent wavefront of the light wave in medium 2 after rafraciton.
Speed of light is

A

the same in medium 1 and medium 2

B

larger in medium 1 than in medium 2

C

larger in medium 2 than in medium 1

D

different at b and d

Text Solution

Verified by Experts

The correct Answer is:
b
In medium 2, wavefront bends away from the normal after refraction. Therefore, ray of light which is perpendicular to wavefront bends toward the normal in medium 2 during refraction. So medium 2 is denser or its speed in medium 1 is more.
Hence, option (b) is corredt.
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