Question

hi guys.. pls solve my question !

pls confirm me that is its answer is b part or any other !​

Answer 1

(b) Speed of light in diamond is 1/2.42 times the speed of light in air.

• Refractive index of a medium describes how fast light travels through the material.

• Refractive Index=

$\frac{c}{v}$

(C= speed of light in vacuum

V= speed of light in medium)

• Since the speed of light is maximum in vacuum (or air), by convention it's absolute refractive index is taken as 1.

• All other materials have their refractive index greater than 1.

• As the value of refractive index of a medium increases, the speed of light in that medium decreases.