Image Formation by a Plane Mirror

Q.

Is image formed by a plane mirror real image or virtual image ?

Q. What type of image does a plane mirror form?

1. Real, erect and at the same distance from the object.
2. Virtual, inverted and at a distance two times as the object.
3. Virtual, erect and at the same distance from the object.
4. Real, inverted and at a distance half as the object.

Q. If an object moves at a speed of $10m{s}^{-1}$ towards a plane mirror. Find out the speed of the image and its direction?

1. $10m{s}^{-1}$, away from mirror
2. $10m{s}^{-1}$, towards the mirror
3. $2m{s}^{-1}$, away from mirror
4. $5m{s}^{-1}$, towards the mirror

Q.

Plane mirrors are used as looking glasses. Give reasons.

Q.

If a plane mirror is moved by a velocity 10 metre per second towards the object, then the velocity of the image and its direction is:

1. 10 m/s, towards the mirror.

2. 10 m/s, away from the mirror.

3. 20 m/s, away from the mirror.

4. 20 m/s, towards the mirror.

Q. How is the position of image formed by a plane mirror related to the position of the object?

Q.

In a plane mirror, the middle surface is covered with a dark paper. How many images of yourself will you see in the mirror if earlier you could see only 1 image?

1. 3

2. 0

3. 1

4. 2

Q.

A person is standing in front of a plane mirror at $60cm$ from it. Suddenly the mirror moves by some distance towards him. It was found that the final image also moves by $40cm$ from the initial position towards the mirror. Find the distance moved by a mirror?

1. $40cm$

2. $15cm$

3. $20cm$

4. $80cm$

Q.

When you see your image in a plane mirror, is it exactly you? Suppose you are looking into a mirror. Your left hand will appear to be at ________in its image in the mirror.

1. At the centre

2. Left

3. Right

4. Can’t say

Q.

Images formed by plane mirror are always erect . Give reason of one to two lines.

Q. An object placed $3m$ from a plane mirror is shifted further by $0.4m$ away from the mirror. What is the new distance between the object and its image?

1. $\text{3.8 m}$
2. $\text{6.6 m}$
3. $\text{3.4 m}$
4. $\text{6.8 m}$

Q.

Two plane mirrors are placed parallel to each other. A man is standing at the mid-point of the distance between these two mirrors. Find the number of images formed. (Mirrors are kept symmetrically) [Distance between mirror is 100 cm]

1. Zero

2. 25

3. Can't be determined

4. Infinite

Q.

If a toy car travels at a speed of 2 m/s towards a plane mirror, then at what speed will the image of the car would run towards the mirror.

Q.

A person suffering from myopia is holding a mirror at 100 cm from his face. But he cannot look at it’s image. So he moves the mirror towards him by 40 cm. Find the distance by which his image moves.

1. 40 cm

2. 20 cm

3. 80 cm

4. 100 cm

Q.

The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of truck parked behind his car. This speed at which the image of the truck appears to approach the driver will be? If the truck is 20m behind the car, after how long will the car crash into the truck? [5 MARKS]

Q. A boy is standing in front of a plane mirror. Choose the INCORRECT statement.

1. Image of the boy will be erect and diminished.
   
2. Image formed will be virtual and of the equal size.
   
3. Left hand of the boy will appear as right in the image.
   
4. Boy and his image will be at equal distance from the mirror.
   

Q. What the difference between erect or virtual image?

Q. If the angle of incidence is 30 degrees, what will be the angle X as shown in the figure ?

1. 0 degree
2. 30 degrees
3. 60 degrees
4. 90 degrees

Q.

A ray of light is incident on a convex mirror at an angle of incidence of $30°$. What is the angle of reflection?

1. $15°$

2. $30°$

3. $60°$

4. none of these

Q.

The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 4 m per second. The driver sees, in his rear view mirror, the image of a scooter parked behind his car. The speed, at which its image appears to approach the driver, will be what among the following options-
a) 2 metre per second
b) 4 metre per second
c) 8 metre per second
d) 16 metre per second

Q. What type of image is formed on a cinema screen?

Q.

Siddharth wanted to see his inverted image in a plane mirror. So, he stood between a concave mirror and a plane mirror facing each other as shown in the figure. Knowing the focal length of the concave mirror, he found the distance between him and his inverted virtual image, formed in the plane mirror. What is his answer?

Q.

Image formed by a plane mirror is always of the same size as the object.

1. plane

2. concave

Q. What is common among the given images?

1. 
2. 
3. 
4. 

Q.

An object is kept at a distance of $80cm$ in front of a plane mirror M. If the mirror is now moved $25cm$ away from the object, how does the image shift from its previous position?

Q.

An image formed on the screen is always a virtual image.

1. False
2. True

Q. How many capital letters of the English Vowels are not laterally inverted in a mirror?

1. 2
2. 5
3. 4
4. 0

Q. A boy rotates his arm in clockwise direction in front of mirror. His mirror image rotates its arm in:

1. insufficient info
2. clockwise direction
3. anticlockwise direction
4. oscillatory motion

Q.

If you are standing between 2 plane mirrors, inclined to each other at 60°. Then find number of images that you can see of yourself?

1. 7

2. 6

3. 5

4. 4

Q. If an object moves 5 m/sec towards the mirror and the mirror also moves with speed 5 m/sec towards the object, then the velocity by which image will move towards the mirror is

1. 15 m/sec
2. 25 m/sec
3. 5 m/sec
4. 10 m/sec