C10-P--CHP-9-ZMZR-AS ON 14-06-2024

The normal at any point on the mirror passes through

• focus

• pole

• center of curvature

• any point

A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be

• both concave

• both convex

• the mirror is concave and the lens is convex

• the mirror is convex, but the lens is concave.

If an incident ray passes through the focus, the reflected ray will

• pass through the pole

• be parallel to the principle axis

• retrace its path

• pass through the center of curvature

The power of a lens is ��� 4.0 D. what is the nature of the lens?

• Plane

• Concave

• Convex

• Plano convex

The focal length of a mirror is 15 cm. The radius of curvature is

• 15 cm

• 30 cm

• 45 cm

• 60 cm

Which of the following lenses would you prefer to use while reading small letters found in dictionary?

• A convex lens of focal length 50 cm

• A concave lens of focal length 50 cm

• A convex lens of focal length 5 cm

• A concave lens of focal length 5 cm

When object moves closer to convex lens, the image formed by it shift

• away from the lens

• towards the lens

• first towards and then away from the lens

• first away and then towards the lens

Where should an object be placed in front of a convex lens to get real image of the same size of the object?

• At focus

• At 2f

• At infinity

• Between optical centre and focus

Which of the following statements is / are true?

• A convex lens has 4 dioptre power having a focal length 0.25 m

• A convex lens has - 4 dioptre power having a focal length 0.25 m

• A concave lens has 4 dioptre power having a focal length 0.25 m

• A concave lens has - 4 dioptre having a focal 0.25 m

A divergent lens will produce

• Always real image

• Always virtual image

• Both real and virtual image

• None of these