Question

A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.

Options

• 0°

• 45°

• 90°

Answer 1

A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is 45°.

Explanation:

• Refraction happens when a light ray travels from one medium to another with a differing optical density.
• This bending of light occurs when the angle of incidence is greater than 0° but less than 90°.
• If the angle of incidence is 0°, light flows through without bending.
• At 90°, light travels along the boundary without entering the second medium.

Therefore, refraction can take place at an angle of incidence like 45°, but not at 0° or 90°.