Light Worksheet-7

Light Worksheet-7

1. Which is not the characteristic of a real image?

(a) It can be taken on screen

(b) The rays of light after reflection appear to meet at a point,

(c) The rays of light after reflection actually meet at a point

(d) It is always inverted

2. Which is not the characteristic of a virtual image?

(a) It cannot be taken on the screen

(b) The rays of light after reflection appear to meet at a point

(c) The rays of light after reflection actually meet at a point

(d) It is always erect, but laterally inverted.

3. During solar eclipse the shadow of:

(a) the earth falls on the moon

(b) the moon falls on the earth

(c) the earth falls on the sun

(d) the moon falls on the sun

4. Solar eclipse takes place on :

(a) full moon                                 (b) half moon

(c) crescent moon                        (d) new moon

5. Which is not a translucent medium?

(a) Clouds                                      (b) Fog

(c) Oiled paper                              (d) Vacuum

6. The bodies which do not allow light energy to pass through them are called :

(a) reflecting bodies                     (b) opaque bodies

(c) solid bodies                              (d) non-transparent bodies

7. The bodies which emit light of their own are called :

(a) light giving bodies                  (b) luminous bodies

(c) bright bodies                           (d) all of these

8. Which is not a luminous body?

(a) Burning kerosene oil lamp

(b) Stars

(c) Sun

(d) Moon

9. Which of the following shows a concave mirror?

(a)

(b)

(c)

(d)

10. When a person moves closer to a plane mirror, the size of his image in the mirror

(a) Increases

(b) Remains the same

(c) Decreases

(d) First increases and then decreases

Answer Key:

1. (b)
2. (c)
3. (b)
4. (d)
5. (d)
6. (b)
7. (b)
8. (d)
9. (a)
10. (b)