Rays And Reflections

Question 1

What is the angle of incidence?

Answer 1

The angle between the normal and the incident ray.

Question 2

What is the angle of reflection?

Answer 2

The angle between the reflected ray and the normal (the imaginary line drawn at 90 degrees to the reflecting surface).

Question 3

Why do rough surfaces not reflect sound or light well?

Answer 3

Rough surfaces scatter sound and light in all directions.

Question 4

What is refraction?

Answer 4

When a ray changes direction.

Question 5

What is the incident ray?

Answer 5

The ray of light that you see.

Question 6

How does a lens form an image?

Answer 6

A lens forms an image by refracting light