A thin lens of a glass is immersed in water. what will be the effect of power of lens?
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when a thin lens is immersed in water then the refractive index of glass with respect to surrounding will decrease.
as a result the deviation will e less ,for which the focal length will be more.
As power=1/focal length
more focal length means less less power .
So power will decrease
as a result the deviation will e less ,for which the focal length will be more.
As power=1/focal length
more focal length means less less power .
So power will decrease
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