Image Formation by a Plane Mirror

Q.

The diagram in Figure shows a point object P in front of a plane mirror $M{M}_1$

(a) Complete the diagram by taking two rays from the point P to show the formation of its image.

(b) In the diagram, mark the position of eye to see the image.

(c) Is the image formed real or virtual ? Explain why ?

Q.

An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position ?

Q.

If a plane mirror is moved by a velocity 10 $\frac{m}{sec}$ towards the object. Find out the velocity of the image and its direction?

1. 10 m/s, towards the mirror.

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

3. 20 m/s, towards the mirror.

4. 20 m/s, away from the mirror.

Q.

A man standing in front of a plane mirror finds his image at a distance 6 metre from himself. What is the distance of man from the mirror ?

Q.

Which mirror is used as a rear-view mirror in vehicles?

1. A convex mirror, because it forms a virtual, erect and diminished image. And it also has more field of view than the plane mirror.

2. A concave mirror, because it forms a real image.

3. A plane mirror, because it forms a virtual and erect image.

4. Lens is used instead of a mirror.

Q.

An optician while testing the eyes of a patient keeps a chart of letters 3 m behind the patient and asks him to see the letters on the image of chart formed in a plane mirror kept at distance 2 m in front of him. At what distance is the chart seen by the patient ?

Q.

(a) Write three characteristics of the image formed by a plane mirror ?

(b) How is the position of image related to the position of the object ?

Q.

An insect is sitting in front of a plane mirror at a distance 1 m from it.

(a) Where is the image of the insect formed ?

(b) What is the distance between the insect and its image ?

Q.

The image formed by a plane mirror is :

(a) real

(b) virtual

(c) virtual with lateral inversion

(d) real with lateral inversion.

Q.

The image formed by a plane mirror is :

(a) erect and diminished

(b) erect and enlarged

(c) inverted and of same size

(d) erect and of same size.

Q. Two plane mirrors are placed making an angle ${\theta }^{\circ }$ in between them. For an object placed in between the mirrors, if angle is gradually increased from $0^{\circ }\text{to}{180}^{\circ }$, how will the number of images change: increase, decrease or remain unchanged?

Q. To prevent the silver coating on the mirror from getting scratched a ________ colour paint is used.

1. Red
2. Yellow
3. Blue
4. Green

Q. A boy of height $155cm$ is standing in front of a plane mirror. The height of his image will be:

1. more than 155 cm

2. 155 cm

3. less than or more than 155 cm depending on size of the mirror

4. less than 155 cm

Q.

Harry is standing in front of a plane mirror at a distance of 6 m. His image on the other side will form at a distance of

1. 6 m

2. 12

3. 9m

4. 3m

Q.

In the figure given below, PQ is the object; P ^/Q^/ is its image, AA^/ is the position of the mirror. Name the kind of mirror.

1. Concave Mirror

2. Convex Mirror

3. Plane mirror

4. Both A and B

Q.

The image formed by plane mirror is

1. Virtual and inverted

2. Real and inverted

3. Real and erect

4. Virtual and erect

Q. No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be:

1. (a) and (c) above.
2. Plane mirror
3. Convex mirror
4. Concave mirror

Q.

Which among the following is not true for a plane mirror?

1. Image is always formed at infinity

2. Image formed is always erect.

3. Image formed by a plane mirror is always virtual

4. Lateral inversion always takes place in a plane mirror

Q. No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be:

1. (a) and (c) above.
2. Convex mirror
3. Plane mirror
4. Concave mirror

Q. Identify the phenomenon common to the following pictures.

1. 
2. 
3. 
4. 

Q.

Raj is standing in front of a plane mirror. The distance between Raj and his image is 100cm. If the distance between the mirror and image is x. What could be the possible value of x?

1. x = 25 cm

2. x = 200 cm

3. x = 100 cm

4. x = 50 cm

Q. A light ray is incident normally on a plane mirror. What is the direction of reflected ray? Show it on a diagram.