Question

When a ray of light is incident along the normal on the surface separating two media:

Options

• Neither the direction nor the speed of light changes

• No bending occurs; the direction remains unchanged, though the speed changes

• Light bends towards the normal and the speed remains unchanged

• Light bends away from the normal and the speed remains unchanged

Answer 1

When the ray travels along the normal, there is no bending and the direction remains unchanged, though the speed of light still changes on entering the second medium.