Question

A ray of light Enters Into Benzene From air.if The Refractive index of benzene Is 1.50,by what Percent does The speed of ligjt Reduce on Entering the benzene? For the same Angle of indication in media A,B and C the Angles Of refraction are 20°,30°

Answer 1

I am following up on the first answer by tomorrow morning bed

Answer 2

Answer:

33.3 % .

Explanation:

Given :

Refractive index of benzene = 1.50

We know :

Speed of light = 3 × 10⁸ m / sec

We know formula for n :

n = speed of light in vacuum / speed of light in benzene

n = c / v

1.5 = 3 × 10⁸ / v

v = 2 × 10⁸ m / sec

Now ,

Percentage ( % ) decrease = 1  × 10⁸ / 3  × 10⁸  × 100 %

% decrease = 33.3 % .