Question

A point object is placed in front of a thick plane mirror as shown in figure below. Find the location of final image w.r.t. object.

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A

B

C

D

Medium
Solution
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Correct option is D)

From the mirror, It will appear as if the object has moved towards the glass block by

So the apparent distance from the mirror will be

So image will form behind the mirror.
While looking at the image through the glass block from the opposite side of the mirror, it will again shift towards the mirror by

So the apparent distance will be

So, the distance of the final image with respect to the object is

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