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The Refractive Indices of Four Substance P, Q, R And S Are 1.50, 1.36, 1.77 and 1.31 Respectively. the Speed of Light is the Maximum in the Substance: (A) P (B) Q (C) R (D) S - Science

The refractive indices of four substance P, Q, R and S are 1.50, 1.36, 1.77 and 1.31 respectively. The speed of light is the maximum in the substance: 

(aP
(bQ
(cR
(d

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Solution

 S
Explanation:
We know that:
Refractive index (n) = Speed of light in air / Speed of light in a medium
According to this formula, speed of light will be maximum in a substance whose refractive index is minimum.
Therefore, speed of light will be maximum in substance S whose refractive index is 1.31.

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APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 5 Refraction of Light
Q 19 | Page 228
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