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NEET 1991 (AIPMT) · Refraction, Glass Slab & Apparent Depth

Refraction, Glass Slab & Apparent Depth question from NEET 1991 (AIPMT)

Q86NEET 1991 · AIPMTEasy

Refraction, Glass Slab & Apparent Depth

A beam of monochromatic light is refracted from vacuum into a medium of refractive index 1.5. The wavelength of refracted light will be

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Answer: (c)

Frequency is unchanged, so $\lambda' = \frac{\lambda}{\mu} = \frac{\lambda}{1.5}$ .
The wavelength becomes smaller.
So the answer is (c) smaller.

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