The radius of curvature of the face of plano-convex lens is 12cm and its refractive index is 1.5. If the plane surface of the lens is now silvered, then find the focal length of the lens.

The radius of curvature of the face of plano-convex lens is 12cm and i

1.	The radius of curvature of the face of plano-convex lens is 12cm and its refractive index is 1.5. If the plane surface of the lens is now silvered, then find the focal length of the lens.
Answer» `26cm` `22cm` `24CM` `2CM` Solution :(c) `1/f=(mu-1)(1/(r_(1))-1/(r_(2)))` `1/f=(1.5-1)(1/12-1/(oo))` `f=+24cm`

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The radius of curvature of the face of plano-convex lens is 12cm and its refractive index is 1.5. If the plane surface of the lens is now silvered, then find the focal length of the lens.

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