Question

A mirror forms a virtual image of a real object. the mirror will be

• A. It must be a convex mirror.
• B. It must be a concave mirror.
• C. It must be a plane mirror.
• D. It may be a plane or convex mirror

Answer 1

The correct option is D

It may be a plane or convex mirror

Explanation for Correct answer:

In case of option D.

1. A convex mirror forms a virtual image.
2. The image formation in a convex mirror is always virtual and erect, whatever the object's position.
3. A plane mirror always creates virtual images (behind the mirror).
4. The image and object are the same distance from a plane mirror, the image size is the same as the object size, and the image is upright.

Explanation for incorrect answers:

In case of option A.

1. A convex mirror forms a virtual image.
2. The image formation in a convex mirror is always virtual and erect, whatever the object's position.
3. But it can be a plane mirror also.
4. So this option is incorrect.

In case of option B.

1. A concave mirror may form a real or virtual image depending on the position of the object.
2. When a concave mirror is placed close to the object, a virtual and magnified image is obtained and if the distance is increased between the object and the mirror, the size of the image also reduces, and real images are formed.
3. Thus, this option is incorrect.

In case of option C.

1. It may be a plane mirror.
2. But it may be a convex mirror also.
3. Thus, this option is incorrect.

Thus, the correct option is option D.