Liht: Refraction of Light

What is refraction of light?

• The bending of light as it passes from one medium to another.

• The emission of light from a source

• The reflection of light off a surface

• The absorption of light by a material

What is the difference between reflection and refraction of light?

• Reflection is the bending of light as it passes from one medium to another, while refraction is the bouncing back of light when it hits a surface.

• Reflection only occurs in transparent materials, while refraction only occurs in opaque materials.

• Reflection and refraction are the same thing and can be used interchangeably.

• Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it passes from one medium to another.

Explain the laws of refraction.

• The laws of refraction describe how light bends as it passes from one medium to another.

• The laws of refraction describe how electricity bends as it passes from one medium to another.

• The laws of refraction describe how sound bends as it passes from one medium to another.

• The laws of refraction describe how heat bends as it passes from one medium to another.

What is the refractive index of a medium?

• A measure of how much the speed of light is reduced in that medium compared to its speed in a vacuum.

• The color of the medium.

• The amount of light absorbed by the medium.

• A measure of how much the speed of sound is reduced in that medium compared to its speed in a vacuum.

How does the speed of light change when it enters a different medium?

• The speed of light stays the same

• The speed of light changes

• The speed of light increases

• The speed of light decreases

What is the angle of refraction?

• Angle between the incident ray and the surface

• Angle between the reflected ray and the surface

• Angle between the refracted ray and the incident ray

• Angle between the refracted ray and the normal to the surface

Give an example of refraction of light in everyday life.

• Straw in a glass of water

• Mirror reflection

• Bouncing ball

• Rainbow in the sky

What is total internal reflection?

• Partial reflection of light at the boundary between two mediums

• Reflection of sound at the boundary between two mediums

• Reflection of light at the boundary between a solid and a gas

• Complete reflection of light at the boundary between two mediums

Explain the concept of critical angle.

• The critical angle is the angle of incidence that produces total internal reflection

• The critical angle is the angle of incidence that produces an angle of refraction of 90 degrees.

• The critical angle is the angle of incidence that produces no refraction

• The critical angle is the angle of incidence that produces an angle of refraction of 180 degrees

How does the shape of a lens affect the refraction of light?

• It changes the color of the light

• It determines how much the light is bent

• It has no effect on the refraction of light

• It causes the light to travel faster