First slide

The lens

Question

A diminished image of an object is to be obtained on a screen 1.0 m from it. This can be achieved by appropriately placing

Moderate

A

A convex mirror of suitable focal length
B

A concave mirror of suitable focal length
C

A concave lens of suitable focal length
D

A convex lens of suitable focal length less than 0.25 m

Solution

Convex mirror and concave lens do not form real image. For concave mirror , so image will be enlarged, hence only convex lens can be used for the purpose.

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