RRB Group D 16 Sep 2022 Shift 1 Solved Paper

Question : 73 of 100

Marks: +1, -0

The refractive index of fluid A is 1.47. This means:

the speed of light in fluid A is 1.47 times greater than the speed of light in air.
the speed of light in fluid A is increased 1.47 times than the speed of light in water
the speed of light in fluid A is 1.47 times greater than the speed of light in water.
the speed of light in fluid A is reduced by 1.47 times than the speed of light in vacuum

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