To get three images of a single object, one should have two plane mirrors at an angle of: - Physics MCQ AIEEE 2003 2026 | ExamTest.live | ExamTest.live

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

A $6 0^{\circ}$
B $9 0^{\circ}$
C $12 0^{\circ}$
D $3 0^{\circ}$

Solution & Step-by-step Explanation

The number of images n formed by two mirrors at an angle θ is: n = \frac{360}{θ} - 1 (if 360/ θ is an even integer)Given n = 3 : 3 = \frac{360}{θ} - 1 ⟹ \frac{360}{θ} = 4 ⟹ θ = 9 0^{\circ}

Practice this question

Try it yourself before checking the explanation above.

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

A

6 0^{\circ}

B

9 0^{\circ}

C

12 0^{\circ}

D

3 0^{\circ}

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