Question

1) If an object is placed at a distance of 0.5 m in front of a

plane mirror, the distance between the object and the

image formed by the mirror will be

a. 2m

b. 1 m

c. 0.5 m

d. 0.25 m

2) If angle of incidence of ray of light on a plane mirror is

30 °, then angle of reflection is ___.

a. 30 °

b. 45 °

c. 60 °

d. 90 °

3) Which type of mirror is used in Periscope?

a. convex mirror

b. concave mirror

c. plane mirror

d. none of those

4) Primary colours (as per modern colorimetry) consists

of

a. Cyan, Magenta, Yellow

b. Red, Green, Blue

c. Black, Yellow, White

d. Red, Yellow, Blue

5) The light that is reflected from a compact disc (CD)

consists of

a. Seven colours

b. Eight colours

c. Five colours

d. Three colours​

Answer 1

Answer:

So, distance between object and mirror = 0.5 m+ 0.5m = 1m.

Answer 2

1. b. 1m
2. c. 60°
3. a. Convex
4. c. Black, yellow and white
5. a. Seven Colours