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A convex lens and a concave lens, each h...

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 is

A

25

B

50

C

Infinite

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
D
`P=P_(1)+P_(2)=(1)/(f_(1))+(1)/(f_(2))=(1)/(-25)=0`
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