Question:
A thin lens made of glass refractive index 1 5 of focal
Last updated: 6/8/2023
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A thin lens made of glass refractive index 1 5 of focal length f 16 cm is immersed in a liquid of refractive index 1 42 If its focal length in liquid is f then the ratio f f is closest to the integer 1 1 2 5 3 9 4 17