Reflection, Refraction, Diffraction

Front

What is reflection in terms of light?

Back

Reflection is the bouncing off of light rays from the surface of an object, such as a mirror.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, such as from air to water.

Front

What is diffraction?

Back

Diffraction is the bending and spreading of waves around obstacles and openings.

Front

What happens to light when it passes through water?

Back

Light bends when it passes through water, causing objects like a pencil to appear broken.

Front

What is the Law of Reflection?

Back

The Law of Reflection states that the angle of incidence is equal to the angle of reflection.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3 x 10^8 m/s.

Front

Why do we see grass as green?

Back

We see grass as green because green light is reflected by the grass, while other colors are absorbed.

Front

What is the difference between reflection and refraction?

Back

Reflection involves bouncing off a surface, while refraction involves bending as light passes through different media.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits a boundary at an angle greater than the critical angle, causing it to reflect entirely back into the medium.

Front

What is the critical angle?

Back

The critical angle is the angle of incidence above which total internal reflection occurs.