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Question

How many images of an object will be formed when the object is placed between teo plane mirrors who are inclined at the following angles to one another?

A
1200
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B
450
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C
1800
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D
600
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E
900
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Solution

The correct option is C 600
The formula to calculate the no of images of an object placed between 2 plane mirrors. (360θ1) where θ is angle b/w mirrors
A) θ=120
n=3601201
=31=2 images formed
B) θ=45n=360451
=81=7 images formed
c) θ=180
n=3601801
=21=1 image formed
D) θ=60n=360601=61
=5 images formed
E) θ=90
n=360901=41
=3 images

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