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Image Formation by Convex Lens

What would ha...

Question

What would happen to the image of an object if half of the portion of a lens is covered with a black paper?

A

No image would be formed

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B

Image formed would be half of the object

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C

Image formed would be less bright

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D

There won’t be any difference

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Solution

The correct option is C
Image formed would be less bright

If half portion of a lens is covered, you are blocking half the rays incident on it. Image will be formed by the rays of the bottom half but only half as bright.

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