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Q.

Is it true that if one-half of a convex lens is covered with black paper, then also it will form a complete image of the object?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
When a ray of light strikes the surface of a lens and passes through the focus of the lens, then this type of lens is known as a convex lens, when one-half of the convex lens is covered with black paper, then also the convex lens will form an image of the object in front of it, but the intensity of the image will become less than the original one.
 
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