# When a wave reflects off a barrier, at what angle will it bounce off the barrier?

## Reflection of Waves off a Barrier

**When a wave reflects off a barrier, the angle at which it bounces off the barrier is equal to the original angle. This principle is known as the law of reflection.**

According to the law of reflection, a wave will reflect off a barrier at an angle equal to the original angle, which is measured relative to the perpendicular of the surface at the impact point.

### Explanation:

When a wave reflects off a barrier, the angle at which it bounces off the barrier is equal to the original angle. This principle is known as the law of reflection. Specifically, the angle of reflection equals the angle of incidence, both of which are measured relative to a perpendicular to the surface at the point where the wave strikes the barrier. When thinking about the reflection of a wave, such as light, it helps to imagine individual rays of light hitting and bouncing off the barrier. This law applies to all types of waves, including light, sound, and water waves.

The correct answer to the question, therefore, is that the wave will bounce off at an angle equal to the original angle. This can be verified through experiments with mirrors or other reflective surfaces, where incoming waves create an equal angle with the surface as the outgoing or reflected waves, conforming to the law of reflection.

Final Answer: According to the law of reflection, a wave will reflect off a barrier at an angle equal to the original angle.