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 aA. Convergent lens of focal length 3.5 RB. Convergent lens of focal length 3.0 RC. Divergent lens of focal length 3.5 RD. Divergent lens of focal length 3.0 R

A concave lens of glass, refractive index 1.5 has both surfaces of sam

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 aA. Convergent lens of focal length 3.5 RB. Convergent lens of focal length 3.0 RC. Divergent lens of focal length 3.5 RD. Divergent lens of focal length 3.0 R
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