Question

What name is given to an image which
A. Cannot be obtained on the screen
B. Is always erect
C. The rays after reflection appear to meet at a point.
D. The image is formed behind the mirror

Answer 1

Hint: When an image is formed by mirrors, it is due to the fact that the light which originated from an object gets reflected. There are various types of mirrors used for the purpose of image formation like- plane, convex and concave mirror.

Complete step by step solution:
Images obtained can be of several types like-real or virtual, upright or inverted, and diminished or enlarged. We can do tracing of the reflected rays to characterize the image. The distance from the mirror to the point of focus is called focal length and can be denoted by (f).
Now, the image which cannot be obtained on the screen is known as a virtual image. This is because the rays that come from the object meet behind the mirror. In contrast the real image can be obtained on the screen.
The image which is always erect is a virtual image.
The image whose rays appear to meet at a certain point is again a virtual image because the rays actually meet behind the mirror so we can only assume that they are meeting which is, the rays appear to meet at a point.
For a virtual image, the image is formed behind the mirror.
So the answer is virtual image.

Note: By tracing the rays one can obtain the type of image. Virtual images cannot be photographed.The nature of image depends on the type of the mirror and position of the object. Point of focus of a mirror depends on its curvature.