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JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

When a picture drawn on paper is seen through a slab of a transparent material of thickness

5\mathrm{~cm}

, it appears to be raised by

1.5 \mathrm{~cm}

. The critical angle at the boundary of this transparent material and air is

View answer and explanation

Correct option: D

\sin ^{-1}\left(\frac{7}{10}\right)

Option D (

\sin ^{-1}\left(\frac{7}{10}\right)

) is correct because it correctly calculates the critical angle based on the refractive index derived from the apparent shift.

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In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium A double convex lens is made of glass which has its refractive index 1,45 for violet rays and 1.50 for red rays. If the focal length for violet ray is

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