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

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

Q87NEET 1991 · AIPMTEasy

Refraction, Glass Slab & Apparent Depth

Green light wavelength 5460 Å is incident on an air-glass interface. If the refractive index of glass is 1.5, the wavelength of light in glass would be ( $c = 3 \times 10^{8}\text{ m s}^{-1}$ )

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Answer: (a)

$\lambda_g = \frac{\lambda_{air}}{\mu}$
$= \frac{5460}{1.5} = 3640\text{ Å}$
So the answer is (a) 3640 Å.

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