A concave lens has a focal length of 50 cm. The power of lens would be *
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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.
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Answer:
put the formula p=1/f.
p=100/50
p=2d.
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