Y7 Phy 7_8 Concave and Convex Lenses _Flash Card

How do convex lenses affect light rays?

• They diverge light rays.

• They reflect light rays.

• They absorb light rays.

• They converge light rays.

How do concave lenses affect light rays?

• They converge light rays.

• They diverge light rays.

• They reflect light rays.

• They absorb light rays.

What is the focal point of a convex lens?

• The point where light rays diverge.

• The point where light rays converge.

• The point where light rays are absorbed.

• The point where light rays scatter.

What is the shape of a convex lens?

• It is thicker in the center and thinner at the edges.

• It is uniform in thickness throughout.

• It is thicker at the edges and thinner in the center.

• It has a flat surface on both sides.

What is a 'Convex Lens'?

• Lenses where the center of the lens is thicker than the edges.

• Lenses that are flat on both sides.

• Lenses that are thicker at the edges than in the center.

• Lenses that only focus light in one direction.

What is the focal point of a concave lens?

• The point where light rays converge to a single point.

• The point where light rays appear to diverge from.

• The point where light rays are absorbed by the lens.

• The point where light rays are reflected back.

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

• They converge to a point.

• They spread out or diverge.

• They remain parallel.

• They are absorbed by the lens.

What is a 'Concave Lens'?

• Lenses where the center of the lens is thicker than the edges.

• Lenses where the center of the lens is thinner than the edges.

• Lenses that magnify objects when viewed through them.

• Lenses that are flat and do not bend light.

A fish eye lens to a camera uses a _____ lens to produce a panoramic picture.

• Convex

• Concave

• Biconvex

• Plano-concave

In which applications are concave lenses commonly used?

• Used in glasses for nearsightedness and in some types of cameras.

• Used in magnifying glasses and projectors.

• Used in microscopes and telescopes.

• Used in contact lenses and binoculars.