Plane Mirror

Q.

The working of a barber’s mirror involves the phenomenon of

1. Single reflection

2. Diffused reflection

3. Multiple reflection

4. Irregular reflection

Q.

State which surface of a plane mirror reflects most of the light incident on it : the front smooth surface or the back silvered surface.

Q.

Name the mirror which is small in size, but can form a full image of a tall building.

1. concave mirror

2. plane mirror

3. a combination of concave and plane mirror

4. a convex mirror

Q.

Shubham has to send a laser signal to Aman. But he finds out that the signal misses Aman by $4^0$. He asks Himanshu to rotate the mirror.

By what angle should Himanshu rotate the mirror so that the signal reaches Aman?

1. 2⁰ in clockwise direction

2. 4⁰ in anti – clockwise direction

3. 2⁰ in anti – clockwise direction

4. 4⁰ in clockwise direction

Q. The area illuminated during diffused reflection is _______ regular reflection by a plane surface. Assume parallel beam of incident light is used.

1. brighter than
2. larger than
3. same as
4. smaller than

Q. A plane mirror is approaching you at $10cm{s}^{-1}$. Your image shall approach you with a speed of:

1. $10cm{s}^{-1}$
2. $5cm{s}^{-1}$
3. $20cm{s}^{-1}$
4. $40cm{s}^{-1}$

Q.

The number of images formed by two plane mirrors inclined at an angle ${60}^{\circ }$ of an object placed symmetrically between mirrors is

1. 5

2. 6

3. 4

4. 7

Q. The laws of reflection hold good for ________.

1. only mirrors
2. rough surfaces
3. all kind of surfaces
4. smooth surfaces

Q. The area illuminated during diffused reflection is _______ regular reflection by a plane surface. Assume parallel beam of incident light is used.

1. brighter than
2. smaller than
3. larger than
4. same as

Q. If The mirror is shifted towards left then how does the fringe pattern on screen change?
(A) fringe width decreases and the region in which interference is formed shifts downward
(B) fringe width decreases and the region in which interference is formed shift upwards
(C) fringe width does not change and the region in which interference is formed shifts upward
(D) fringe width does not change and the region in which interference is formed shifts downward