Focal length of a converging lens in air is R. If it is dipped in wate – McqOptions

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1.	Focal length of a converging lens in air is R. If it is dipped in water of refractive index 1.33, then its focal length will be around (Refractive index of lens material is 1.5) [RPMT 1997; EAMCET (Med.) 1995]
A.	R
B.	2R
C.	4R
D.	R / 2
Answer» D. R / 2

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