Real and Virtual Images

Q.

Is the image of an object in a plane mirror virtual or real ?

Q. Why do we say that a plane mirror forms a virtual image of an object?

Q.

Real image cannot be obtained on a screen.

1. True
2. False

Q. What is a virtual image ?

Q. Image formed by a plane mirror is ______.

1. virtual, behind the mirror and enlarged.
2. virtual, behind the mirror and of the same size as the object.
3. real at the surface of the mirror and enlarged.
4. real, behind the mirror and of the same size as the object.

Q. The focus of mirror changes with colour of light. But 2F=R and I dont think radius of mirror can change

Q. what is focal length of a plane mirror.?

Q. An image A is formed on a screen so image A is:

1. Can be real or virtual
2. Virtual image
3. Cannot say
4. Real image

Q.

This image does not exist.______

Q.

Where is the image formed?

1. at A point

2. cannot be determined, since we need at least 2 rays to form a image

3. image is formed at pole

4. forms at infinity