Question

State whether true or false :

Light travels faster in glass than in air.

• A. True
• B. False

Answer 1

The correct option is B False

False.

we know that speed of light in any medium is $v=\frac{c}{\eta }$.

Where c is the speed of light in vacuum and $\eta$ is refractive index of medium . Refractive index of glass is higher than of air, so light will travel faster in air.