Physics, asked by nishadahiya672, 6 hours ago

find the power of lens of focal length 250 cm​

Answers

Answered by ushaurya063
2

Answer:

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.

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