A concave lens of glass, refractive index 1.5, has both surfaces of sa – McqOptions

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1.	A concave lens of glass, refractive index 1.5, has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a [IIT-JEE 1999]
A.	Convergent lens of focal length 3.5 R
B.	Convergent lens of focal length 3.0 R
C.	Divergent lens of focal length 3.5 R
D.	Divergent lens of focal length 3.0 R
Answer» B. Convergent lens of focal length 3.0 R

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