Reflection and refraction of light

The image formed by a plane mirror is:

• Virtual, behind the mirror and enlarged

• Virtual, behind the mirror and of the same size as the object

• Real, at the surface of the mirror and enlarged

• Real, behind the mirror and of the same size as the object

The angle between an incident ray and the plane mirror is 30°. The total angle between the incident ray and reflected ray will be:

• 30°

• 60°

• 90°

• 120°

A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:

• 45°

• 90°

• 0°

• 60°

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

• A flat surface

• A bent-in surface

• A bulging-out surface

• An uneven surface

If R is the radius of curvature of a spherical mirror and f is its focal length, then what is the relation between them

• R=f

• R=2f

• R=f/2

• R=1/f

If the focal length of a spherical mirror is 12.5 less cm, its radius of curvature will be

• 25 cm

• 15 cm

• 20 cm

• 35 cm

The real image formed by a concave mirror is larger than the object when the object is

• At a distance equal to radius of curvature

• At a distance greater than radius of curvature

• At focus and centre of curvature

• At a distance less than focal length

The image formed by a concave mirror is virtual, erect and magnified. The position of object is

• At focus

• At pole

• Between centre of curvature and focus

• Between pole and focus

The image formed by a concave mirror is real, inverted and highly diminished. The object must be

• Between center of curvature and focus

• At centre of curvature

• At focus

• At infinity

The angle of incidence for a ray of light passing through the centre of curvature of concave mirror is

• 45°

• 90°

• 0°

• 180°