Image Formation

Q. The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 4 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be:

1. 1 m/s​
2. 4 m/s​
3. 8 m/s​
4. 2 m/s​

Q.

The image obtained by a mirror is erect and of the same size as the object. Which of the following mirrors is used?

1. Plane mirror

2. Concave mirror

3. None of the above

4. Convex mirror

Q.

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

1. spherical

2. concave

3. plane

4. convex

Q. A boy is observing his image in a plane mirror. The distance between the mirror and his image is $6m$. If he moves $2m$ towards the mirror, then the distance between the boy and his image will be:

1. 6 m
2. 8 m
3. 4 m
4. 2 m

Q.

Plane mirror is also known as convergent mirror.

1. True

2. False

Q.

What is the minimum number of rays required to form the image of a point?

1. One

2. Two

3. Infinite

4. Rays are not responsible for formation of image

Q. In a pinhole camera, the image of height 6 cm is formed at a distance of 10 cm. If the object is situated at a distance of 5 cm, the height of the object is:

1. 1.5 cm
2. None of these
3. 3 cm
4. 6 cm

Q.

An image is said to be formed when:

1. incident rays appear to meet

2. reflected rays appear to meet

3. reflected rays meet at a point

4. incident rays meet at a point

Q. The image formed by a pinhole camera is:

1. Virtual and inverted
2. Real and inverted
3. Virtual and erect
4. Real and erect

Q. An image formed by a plane mirror is ___________.

1. Bigger in size
2. Smaller in size
3. Real
4. Erect