Optics Question 800

Question: A plane mirror is held at a height h above the bottom of an empty beaker. The beaker is now filled with water up to depth d. The general expression for the distance from a scratch at the bottom of the beaker to its image in terms of h and the depth d of water in the beaker is\

Options:

A) 2hd(μμ1)

B) 2hd2(μ1μ)

C) 2hd(μ1μ)

D) 2hd(2μ1μ)

Show Answer

Answer:

Correct Answer: C

Solution:

[c] The distance of bottom of the beaker from mirror =hd(11μ)

So it will be at a distance =hd(11μ) from mirror.

Now distance between bottom of beaker and image =h+hd(11μ)=2hd(μ1μ).



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