Science, asked by sharmaji01095, 5 months ago

what is the power of a concave lens having focal length -20 CM

Answers

Answered by januu36

0

Explanation:

The power of a lens is 1/focal length (measured in meters). So, 50 cm is 1/2 meter, so the power is -2; D stands for diopters, the unit of power for lenses.

Hence, the power of a concave lens of focal length 50 cm is -2D.

Answered by cbhoomika2023

1

Answer:

the power of the concave lens is -5D

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