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Q.

Is it true that when one-half of a convex lens with a focal length of 10 cm is covered with black paper, it produces an complete image of the object placed at a distance of 30 cm from the lens?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
When one-half of a convex lens with a focal length of 10 cm is covered with black paper, it will produce an image of a complete object between F2 and 2F2 situated at a distance of 30 cm from the lens.
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Is it true that when one-half of a convex lens with a focal length of 10 cm is covered with black paper, it produces an complete image of the object placed at a distance of 30 cm from the lens?