Q.

What is the unit of magnifying power of a lens?


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a

ohm

b

ampere

c

dioptre

d

m/sec 

answer is C.

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Detailed Solution

The unit of magnifying power of a lens is dioptre.
The power of the lens is inversely proportional to the focal length. Therefore, the power of the lens has the ability to converge or diverge the light rays. If the focal length is represented in meters, power is said to be dioptre. Unit of Power is Dioptre(D).
 
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