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in Physics by (79.0k points)

A converging lens forms a real image I of an object on its principal axis. A rectangular slab of refractive index μ and thickness x is introduced between I and the lens, I will move

(a)  towards the lens (μ-1)x

(b)  towards the lens  by (1- 1/μ)x

(c)  away from the lens by (μ-1)x

(d)  away from the lens by (1- 1/μ)x

1 Answer

+1 vote
by (50.7k points)
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Best answer

Correct option (d)  away from the lens by (1- 1/μ)x

Explanation:

Due to insertion of slab, the optical path increases by x/μ, where x is thickness of slab. Therefore the converging point will shift away by

.

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