Q97
A lens, immersed in a liquid becomes invisible when
A.
the focal length of the lens is zero
B.
the focal length of the lens is finite
C.
the refractive index of the lens is less than the refractive index of the liquid
D.
the refractive index of the lens is equal to the refractive index of the liquid
AnswerAnswer: Option D
Solution
Answer: Option D
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