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Q.

Half of the lens is wrapped in black paper. Then       

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a

Size of the image is halved

b

Both size and intensity of the image are changed

c

Intensity of image is halved

d

There is no change in size of the image or intensity

answer is B.

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Detailed Solution

When half of the lens is wrapped in black paper we get same size of image but intensity of image will be halved

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