Q19 of 112 Page 310

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

The image of an object in a plane mirror is virtual. Virtual image cannot be projected onto the screen because it is not real.

A virtual image is a copy of the object, formed on the plane mirror. The light rays never come from the image. They appear to come from the object.

What type of reflection of light takes place from:

(a) a cinema screen?

(b) a plane mirror?

If an object is placed at a distance of 7.5 cm from a plane mirror, how far would it be from its image?

Name the phenomenon responsible for the following effect:

When we sit in front of a plane mirror and write with our right hand, it appears in the mirror that we are writing with the left hand.

Name a device which works on the reflection of reflected light.