Question

the speed of light in a transparent medium is 0.6 times that of its speed in vacuum

Answer 1

Answer:

1.66

Explanation:

The speed of light in a transparent medium is 0.6 times that of its speed in vacuum. The speed of light in vacuum, commonly denoted c, is a universal physical constant, with c = f where c is the the speed of light. Thus, As an object approaches the speed of the light, its mass rises precipitously.

Therefore,

Refractive index of medium = speed of light in vacuum / speed of light in medium. Hence -

RI = 1/0.6 = 5/3 or 1.66

Thus, the speed of light in a transparent medium is 0.6 times that of its speed in vacuum which will be 1.66.

Answer 2

Answer:

1.67

Explanation:

Speed of light in vacuum (c) =3 * 10^8 m/sec

Speed of light in medium (v) = 0.6 * c

Refractive index (n) =c / v

Refractive index (n) = c / 0.6 * c = 1/ 0.6

Refractive index (n) = 1.66666..... = 1.67  Answer

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