REFLECTION OF LIGHT

Magnification of Concave mirror is

• Always positive

• Always Negative

• May be positive or Negative

• Always equal to 1

When a ray of light incident normally on a reflecting surface, the angle of reflection of light is

• 90

• 0

• 45

• 180

A pencil is 15 cm from the plane mirror, what is the distance from the image to the mirror ?

• 30cm

• 20cm

• 15cm

• None of these

Which of these diagrams show how light rays travel? There may be more than one that is right.

• A

• B

• C

• D

List the characteristics of image formed by a plane mirror 

• Real, Erect, Small

• Virtual, Erect, Same size

• Real, Inverted, Large

• Virtual, Inverted, large

At what distance an object is kept in front of a concave mirror of focal length 10 cm so as to obtain a real image twice as magnified as the object ?

• 5cm

• 10cm

• 15cm

• 20cm

A 4.5cm object is placed at 12cm away from a convex mirror of focal length 15cm. Find the magnification produced by this mirror in this case.

• 5.5

• 4.8

• 0.5

• 0.48

Which is the reflected ray?

• A

• B

• C

• D

From the diagram shown, what is the angle of reflection?

• 20^o

• 40^o

• 70^o

• 90^o

What kind of light rays form a virtual image?

• converging rays

• diverging rays

• refracting rays

• None of these