IS_Section Quiz_14.5_e

Convex lens is thicker at the centre than at its edges.

• True

• False

When parallel light rays pass through a concave lens, they will converge at a point.

• True

• False

(E) A convex lens can form both real images and virtual images.

• True

• False

(E) A concave lens can form virtual images only.

• True

• False

(E) The unit of magnification is meter (m).

• True

• False

Concave lens is thinner at the centre than at its edges.

• True

• False

A lens works because of the refraction of light.

• True

• False

Focal length of a lens is the distance between the two principal foci.

• True

• False

(E) An image formed on a screen must be a real image.

• True

• False

(E) Magnification is smaller than 0 for a diminished image.

• True

• False