Mirrors

Q. A piece of polished glass or polished metal can be used as a mirror.

1. False
2. True

Q. The mirror is a/an object.

1. transparent
2. translucent
3. opaque

Q. A mirror is a smooth surface which can change the direction of light falling on it such that it returns to the same medium.

1. True
2. False

Q. Observe the figure given below:

When the torch is lit as shown, which of the following should be the object A to get the patch of light at B?

1. A wooden board
2. A glass sheet
3. A plane mirror
4. A sheet of white paper

Q. Which of the following objects reflects the maximum amount of light falling on it?

1. Glass
2. Water
3. Butter paper
4. Mirror

Q.

Question 1

Observe the picture given in Fig. carefully.

A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?

(a) A wooden board

(b) A glass sheet

(c) A mirror

(d) A sheet of white paper

Q.

Two plane mirrors are initially inclined at 30° and they are moved apart by 30° each time, till the angle between them becomes 120°. If an object is placed symmetrically between them then find the sum of all the images formed.

1. 21

2. 22

3. 20

4. 23

Q. Which of the following devices make use of the phenomenon of multiple reflection?

1. Kaleidoscope
2. Periscope
3. Spectacles
4. Microscope

Q. Incident light falling on the surface is sent back into the same medium is an example of _______________.

1. reflection
2. polarization
3. absorption
4. refraction

Q. Which of the following is true about the plane mirror?

1. Always form virtual image.
2. An image formed is laterally inverted.
3. Used in periscopes
4. Used as a rearview mirror.