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Question

Images of an object that is equidistant from the two plane mirrors whose reflecting surfaces make an angle of 90 with one another lie on a/an

A
straight line
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B
parabola
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C
circle
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D
ellipse
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Solution

The correct option is C circle

By applying the concept of object distance = image distance from the plane mirror, we can see that 3 images and the object are symmetrical w.r.t intersection of the mirrors M1 and M2. Therefore, all the 3 images lie on a circle with centre at intersection of the mirrors.

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