Question

A convex mirror and a concave mirror of radius 10 cm each are placed 15 cm apart facing each other. An object is placed midway between them. If the reflection first takes place in the concave mirror and then in convex mirror, the position of the final image is

A
On the pole of the convex mirror
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B
On the pole of the concave mirror
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C
At a distance of 10cm from the convex mirror
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D
At a distance of 5 cm from the convex mirror
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Solution

The correct option is D On the pole of the convex mirrorfor concave mirror u=−7.5 ; f=−51v+1u=1f1v−215=−15v=−15i.e, image is formed at pole of convex mirror for convex mirror , u=0 ;f=+51v+1u=1f1v+10=15v=0so final image is formed at pole of convex mirror , hence option A is correct

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