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Q.

Is it true that light travels slowest in sulphuric acid if the refractive indices of water, glass and sulphuric acid are $1.33, 1.53$ and $1.43$ respectively?

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a

True

b

False

answer is B.

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Detailed Solution

The above statement is False.
Light travels slowest in the substance, which has a maximum refractive index. Here the light will travel the slowest in the glass since the refractive index of glass is maximum from the above substance. At the same time, the refractive index of sulphuric acid is

1.43

, which is lower than the refractive index of glass.
The correct statement would be the refractive indices of water, glass and sulphuric acid are

1.33, 1.53 and 1.43

, respectively; hence light travels the slowest in the glass.

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