A convex lens and a concave lens, each having same focal length of `25 cm`, are put in contact to form a combination of lenses. The power in diopters of the combination isA. 25B. 50C. InfiniteD. Zero

A convex lens and a concave lens, each having same focal length of `25

1.	A convex lens and a concave lens, each having same focal length of `25 cm`, are put in contact to form a combination of lenses. The power in diopters of the combination isA. 25B. 50C. InfiniteD. Zero
Answer» Correct Answer - D `P=P_(1)+P_(2)=(1)/(f_(1))+(1)/(f_(2))=(1)/(-25)=0`

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A convex lens and a concave lens, each having same focal length of `25 cm`, are put in contact to form a combination of lenses. The power in diopters of the combination isA. 25B. 50C. InfiniteD. Zero

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