Question

the refractive incides of A,B,C andD are 1.3,1.003,2.4and 2.2.the speed light is more in

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Answer 1

Required Answer:-

The refractive index is given by: the velocity of light c of a given wavelength in vacuum divided by its velocity v in a medium or,

$\LARGE{ \boxed{ \sf{ \mu = \frac{c}{v} }}}$

That means, Refractive index is indirectly proportional to the velocity of the light in a medium.

According to the above relation, the speed of light will be more in the medium having the least refractive index. Hence, The speed will travel faster in:

$\LARGE{ \boxed{ \sf{ \mu = 1.003}}}$

That is the Second option or Option B.

Answer 2

Answer:

the speed of light will be more in B

Explanation:

we know that the speed of light is inversely proportional to the refractive index of a medium. so as the refractive index of medium increases, its speed decreases. Here we find that the refractive index of medium B is the least. So the speed of light it will be the highest at medium B