Optics Question 716

Question: A beam of light is converging towards a point I on a screen. A plane glass plate whose thickness in the direction of the beam = t , refractive index = μ , is introduced in the path of the beam. The convergence point is shifted by

[MNR 1987]

Options:

A) t(11μ) away

B) t(1+1μ) away

C) t(11μ) nearer

D) t(1+1μ) nearer

Show Answer

Answer:

Correct Answer: A

Solution:

Normal shift Δx=(11μ) t and shift takes place in direction of ray.



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