Optics Question 538

Question: To get three images of a single object, one should have two plane mirrors at an angle of

[AIEEE 2003]

Options:

A) $ 30{}^\circ $

B) $ 60{}^\circ $

C) $ 90{}^\circ $

D) $ 150{}^\circ $

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Answer:

Correct Answer: C

Solution:

$ n=( \frac{360}{\theta }-1 ) $

$ \Rightarrow 3=( \frac{360}{\theta }-1 )\Rightarrow \theta =90{}^\circ $



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