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If there is an increase or decrease in t...

If there is an increase or decrease in the focal length of a lens, what will be the effect on the power of the lens ?

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The power of a lens is the inverse of its focal length.hence , if there is an increases in the focal length of a lens, the power of the lens will decrease accordingly. Similarly, if there is a decrease in the focal length of a lens, the power of the lens will increase accordingly.
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