How many images of himself can an observer see in a room whose two adjacent walls are fitted with plane mirrors explain briefly?

A person is in a room whose ceiling and two adjacent walls are mirrors. How many images are formed [AFMC 2002]

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Asked by anirbanbag81 6th March 2018, 12:24 PM

Answer:

Number of images formed by two mirrors = (n)

Angle of inclination with each other = x

(n) is given by

n = (360/x) - 1

All the three mirrored walls are perpendicular, i.e x = 90 degrees.

considering two adjacent walls, the number of images formed will be

(360/90) - 1

= 4 - 1 = 3

These images formed by the combination of two adjacent walls will be in addition to the object itself

act as objects for the ceiling mirror (totally 4), thus the total number of images formed will be 

3 + 4 = 7 images.

Answered by Expert 6th March 2018, 7:01 PM

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