Light and Lenses

What type of lens converges light rays to a single point?

• Convex lens

• Concave lens

• Flat lens

• Diverging lens

Explain the difference between convex and concave lenses.

• Convex lenses converge light rays, while concave lenses diverge light rays.

• Convex lenses have a concave shape

• Concave lenses converge light rays

• Convex lenses diverge light rays

How does a convex lens bend light rays?

• Convex lenses are thicker in the middle and thinner at the edges, causing light rays to converge.

• Convex lenses have no effect on light rays.

• Convex lenses are thinner in the middle and thicker at the edges, causing light rays to diverge.

• Convex lenses absorb light rays instead of bending them.

What is the focal length of a lens?

• The focal length of a lens is the color intensity of the image produced.

• The focal length of a lens is the number of blades in the aperture.

• The focal length of a lens is the size of the lens cap.

• The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus.

Describe how a concave lens diverges light rays.

• A concave lens diverges light rays by refracting them away from the principal axis.

• A concave lens converges light rays towards the principal axis.

• A concave lens reflects light rays.

• A concave lens absorbs light rays.

What is the purpose of a lens in a magnifying glass?

• To block light rays

• To converge light rays

• To absorb light rays

• To disperse light rays

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

• They converge at a focal point.

• They disappear completely.

• They diverge at a focal point.

• They split into multiple beams.

How does the shape of a lens affect its ability to refract light?

• The shape of a lens has no impact on its ability to refract light

• A lens with a concave shape refracts light better than a convex lens

• A lens with a triangular shape refracts light differently than a circular lens

• The shape of a lens determines how light rays converge or diverge, affecting properties such as focal length and magnification.

Explain how lenses are used in cameras.

• Lenses in cameras focus light onto the sensor, control light intake, and enable adjustments in focal length, aperture, and depth of field.

• Lenses in cameras are used to play music

• Lenses in cameras are used to store extra batteries

• Lenses in cameras are used to make phone calls

What is the relationship between the curvature of a lens and its focal length?

• The curvature of a lens and its focal length are directly proportional.

• The curvature of a lens and its focal length are inversely proportional.

• The curvature of a lens has no effect on its focal length.

• The curvature of a lens and its focal length are unrelated.