Optics Question 602

Question: A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

[CPMT 1991; NCERT 1979; BHU 2005]

Options:

A) Equal to unity

B) Equal to 1.33

C) Between unity and 1.33

D) Greater than 1.33

Show Answer

Answer:

Correct Answer: C

Solution:

μair<μlens<μwater i.e., 1<μlens<1.33



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