A convex lens of power P is immersed in a water. How will its power change ?

A convex lens of power P is immersed in a water. How will its power change ?

Q. A convex lens of power P is immersed in a water. How will its power change ?

A.            Increases

B.            Remain unchanged

C.            Decreases

D.            Increases for red colour and decreases for blue colour

 Answer: Decreases

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