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Question: A converging lens forms an image of an object on a screen. The image is real and has twice the size ...

A converging lens forms an image of an object on a screen. The image is real and has twice the size of the object. If the positions of the screen and the object are interchanged, leaving the lens in its original position, what is the new image size on the screen ?

A

Twice the object size

B

Same as the object size

C

Half the object size

D

Can't say as it depends on the focal length of the lens

Answer

Half the object size

Explanation

Solution

m1m2 = 1

m2 =

m2 =12\frac { 1 } { 2 }