Reflections and Refraction

What is the law of reflection?

• The angle of incidence is equal to the angle of reflection.

• Reflection occurs at random angles.

• The angle of incidence is greater than the angle of reflection.

• The law of reflection only applies to concave mirrors.

State Snell's Law.

• The ratio of tan(theta1) / tan(theta2) = constant

• The ratio of sin(theta1) / sin(theta2) = constant

• The ratio of sin(theta1) * sin(theta2) = constant

• The ratio of cos(theta1) / cos(theta2) = constant

Define total internal reflection.

• Total internal reflection is the absorption of all incident light by the boundary between two media.

• Total internal reflection is the refraction of all incident light off the boundary between two media.

• Total internal reflection is the reflection of all the incident light off the boundary between two media.

• Total internal reflection is the scattering of all incident light off the boundary between two media.

Explain how convex lenses focus light.

• Convex lenses focus light by refracting the light rays and causing them to converge at the focal point.

• Convex lenses focus light by absorbing the light rays

• Convex lenses focus light by diffracting the light rays

• Convex lenses focus light by reflecting the light rays

Describe how concave mirrors form images.

• Concave mirrors form images by reflecting light rays that converge at the mirror's surface.

• Concave mirrors form images by reflecting light rays that are parallel to the principal axis.

• Concave mirrors form images by reflecting light rays that diverge at a focal point.

• Concave mirrors form images by reflecting light rays that converge at a focal point.

What is the angle of incidence equal to in the law of reflection?

• Different

• Equal

• Opposite

• Greater

How is the angle of reflection related to the angle of incidence?

• The angle of reflection is equal to the angle of incidence.

• The angle of reflection is perpendicular to the angle of incidence.

• The angle of reflection is opposite in direction to the angle of incidence.

• The angle of reflection is greater than the angle of incidence.

What happens to light when it passes from a less dense medium to a more dense medium?

• It bends towards the normal line.

• It bends away from the normal line

• It remains unchanged

• It speeds up

In which direction does light bend when it enters a denser medium?

• Light bends towards the normal line.

• Light bends away from the normal line.

• Light bends perpendicular to the normal line.

• Light bends in a zigzag pattern.

What type of lens is a magnifying glass?

• Curved lens

• Flat lens

• Diverging lens

• Converging lens