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The optical path of a monochromatic light is same if it goes through 4.0 cm

The optical path of a monochromatic light is same if it goes through 4.0 cm of glass or 4.5 cm of water. If the refractive index of glass is 1.53, the refractive index of the water is

Options

(a) 1.3
(b) 1.36
(c) 1.42
(d) 1.46

Correct Answer:

1.36

Explanation:

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