Question

Identify convex lenses and concave lenses from the following: camera lens, eye lens, magnifying glass, slide projector lens, burning glass, spotlight lens.

Answer 1

• The concave lens is wide at the edges and narrows at the center of the lens whereas the convex lens is thinner at the ends and thicker at the central part of the lens.
• Convex lenses are used to converge the light rays passing through it whereas concave lenses diverge the light rays passing through it.
• Convex lenses are widely used in the camera.
• The eye lens is convex.
• A magnifying glass is a convex lens
• The slide projector lens is convex.
• A burning glass is a large convex lens that concentrates the sun's rays onto a small area.
• Spotlight lenses are convex lenses.