A double convex lens is made of glass of refractive index 1.5. If its – McqOptions

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1.	A double convex lens is made of glass of refractive index 1.5. If its focal length is 30 cm, then radius of curvature of each of its curved surface is [Bihar CEET 1995]
A.	10 cm
B.	15 cm
C.	18 cm
D.	None of these
Answer» E.

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