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You stand at a distance of 50 cm in front of a plane mirror . How far is your image from you ? What is the size of your image if your size is 1.8m ?
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It is 3m .
The image formed at a equal distance behind the mirror as its distance in front of mirror.
Reason
Radius of curvature of plane mirror is infinite.
Thus focal length is also infinite as f= r/2.
According to mirror formula:-
1/U + 1/V = 1/f
Thus 1/f =0
V= -U
According to sign convention u will be negative here then V= U.
Hence distance between image and object will be 3m.
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