Question

When light rays travel obliquely from a rarer medium to a denser medium, they slow down and bend towards the normal.

• A. True
• B. False

Answer 1

The correct option is A True

When a light ray is incident obliquely from one transparent medium to another, its path undergoes a deviation which is called refraction. This is because light travels at a different speed in different media. The speed of light in the denser medium is less than the speed of light in a rarer medium. As light follows fermat's principle. light rays bend towards normal when it travels from a rarer to denser medium.