C10-P-CHP-9-ZMZR-AS ON 21-06-2024

In a convex spherical mirror, reflection of light takes place at:

• a) a bulging - out surface

• b) a bent - in surface

• c) an uneven surface

• d) a flat surface

The angle to which an incident ray at an angleθ deviates on getting reflected from a surface are

• a) 180 - θ

• b) 180 - 2θ

• c) 2θ

• d) θ

The angle of reflection is equal to the angle of incidence:

• a) sometimes

• b) always

• c) never

• d) under special conditions

All the rays of light parallel to the principal axis after reflection pass through:

• a) Pole

• b) Focus

• c) Radius of curvature

• d) Mid point of lens.

The image formed by a plane mirror is:

• a) real, behind the mirror, and of the same size as the object

• b) virtual, behind the mirror, and of the same size as the object

• c) virtual, behind the mirror, and enlarged

• d) real, at the surface of the mirror, and enlarged

The focal length of a concave mirror whose radius of curvature is 32cm:

• a) 22 cm

• b) 32 cm

• c) 12 cm

• d) 16 cm

The image of an object formed by a plane mirror is:

• a) virtual

• b) upside - down

• c) real

• d) diminished

The real image formed by a concave mirror is smaller than the object if the object is:

• a) at a distance equal to radius of curvature

• b) at a distance greater than radius of curvature

• c) at a distance equal to focal length

• d) between centre of curvature and focus

An object moves a distance fbetween 2f and f of a concave mirror. The image would have travelled a distance of

• a) f2

• b) ∞

• c) 2f

• d) f

When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror. The focal length of the mirror:

• a) 10 cm

• b) 4 cm

• c) 8 cm

• d) 6 cm