Question 1

Which of the following statements best describes a lens ray diagram?

Accepted Answer

A diagram used to illustrate the behavior of light rays as they pass through a lens

Answer

A diagram illustrating the refraction of light in air

Answer

A diagram showing the colors of light

Answer

A diagram showing the structure of a lens

Question 2

In a lens ray diagram, where is the object located?

Accepted Answer

Before the lens

Answer

After the lens

Answer

Inside the lens

Answer

On the lens

Question 3

What happens to light rays when they pass through a concave lens?

Accepted Answer

They diverge

Answer

They reflect

Answer

They converge

Answer

They scatter

Question 4

What type of lens is thicker at the center than at the edges?

Accepted Answer

Convex lens

Answer

Concave lens

Answer

Plano-convex lens

Answer

Double convex lens

Question 5

What is the focal length of a lens?

Accepted Answer

The distance between the lens and its focal point

Answer

The distance between the lens and the principal axis

Answer

The distance between the lens and the image

Answer

The distance between the lens and the object

Question 6

What does a lens ray diagram show for a converging lens?

Accepted Answer

The formation of a real or virtual image

Answer

The refraction of light in air

Answer

The colors of light

Answer

The structure of the lens

Question 7

What is the principal axis of a lens?

Accepted Answer

An imaginary line passing through the center of the lens

Answer

The axis perpendicular to the lens

Answer

The line connecting the two focal points

Answer

The edge of the lens

Question 8

What is the refractive index of a lens?

Accepted Answer

The ratio of the speed of light in a vacuum to the speed of light in the lens material

Answer

The diameter of the lens

Answer

The thickness of the lens

Answer

The curvature of the lens

Question 9

What is the principal focus of a lens?

Accepted Answer

The point where parallel rays of light converge or appear to converge after passing through the lens

Answer

The point where parallel rays of light diverge after passing through the lens

Answer

The center of the lens

Answer

The point where the lens touches the object

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