Question

The refractive indices of four substances A,B,C And D are 1.61,1.77,1.33 and 1.52 respectively.The speed of light is maximum in the substance 1M a) A b)B c)C d) D​

Answer 1

Answer:

• Speed of light is maximum in medium C

Explanation :-

According to the Question

It is given the refractive index of four different media.

Refractive Index of Media A = 1.61

Refractive Index of Media B = 1.77

Refractive index of Media C = 1.33

Refractive Index of Media D = 1.55

As we know that refractive index of any Media is calculated by the speed of light in vacuum divided by speed of light in that Media.

• Refractive Index is inversely proportional to the speed of light in vacuum .

It means that if the refractive index of medium is Maximum then the speed of light in that medium is minimum vice -versa.

So, from the above conclusion we observe that the refractive index of substance C is minimum So the speed of light is maximum in medium C .

Answer 2

Required Answer :-

Option C ✅

Why?

As we know that the substance which has less refractive index will have the maximum speed of light

Here,

A = 1.61

B = 1.77

C = 1.33

D = 1.52

Clearly, Substance C has less refractive index. Therefore, Option C is correct.