Physics, asked by kalpeshkawade, 11 months ago

A convex lens of focal length 20cm is placed in contact with a concave lens of focal length 25 cm Find the power of the combination of lenses (in diopter)

Answers

Answered by vineet182

1

the correct. answer is -20D

kalpeshkawade: answer is 1 digit only

vineet182: what ????????

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