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A ray reflected successively from two pl...

A ray reflected successively from two plane mirrors inclined at a certain angle `(lt 90^(@))` undergoes a deviation of `300^(@)` . The number of images observable are:

A

10

B

11

C

12

D

14

Text Solution

Verified by Experts

The correct Answer is:
B
If an angle between mirrors is `theta` then the deviation from two plane mirrors will be =` 2pi -2 theta`
`300 = 2pi - 2 theta implies theta = 30^(@)`, Hence `(300)/(30)= 12`
Number of images = m-1 = 12-1 = 11
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ALLEN -GEOMETRICAL OPTICS-EXERCISE-2
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