If light travels from oil (slower medium) to water (faster medium) at an angle, what happens to the direction of the light ray in water with respect to normal?

Question

A.
It moves away from the normal.
B.
It moves toward the normal.
C.
It will move along the normal.
D.
It will move perpendicular to the normal.
E.
It stops traveling.

Answer 1

When light travels from a slower medium (like oil) to a faster medium (like water) at an angle, it will bend away from the normal. According to Snell's law, when light passes from a medium with a higher refractive index (oil) to one with a lower refractive index (water), the angle of refraction increases compared to the angle of incidence.

Therefore, the correct answer is:

A. It moves away from the normal.