Question

Under what condition, a concave mirror forms a virtual image of the object?

Answer 1

1. When the rays of light after getting reflected from a mirror appear to meet at a point, a virtual image is formed.
2. Such an image can only be seen through a mirror but cannot be obtained on a screen.
3. So, the image which can be seen only in a mirror but cannot be obtained on a screen is called a virtual image. The image formed by a plane mirror is a virtual image.
4. A concave mirror forms a virtual image when the object is placed at distances less than its focal length.