Question

For an object, which of the following is true corresponding to the image formed by a concave mirror?

• A. A real image is always diminished.
• B. A virtual image is always magnified.
• C. A virtual image is always inverted.
• D. A virtual image cannot be formed.

Answer 1

The correct option is B A virtual image is always magnified.

In a concave mirror:
1. A virtual image is formed when the object is placed between the focus and the pole. In this case, the image formed is always magnified and erect.
2. If the object is placed between the focus and the centre of curvature, image formed is real and magnified.
3. If the object is placed beyond the centre of curvature, image formed is real and diminished.
4. If the object is placed at the centre of curvature, image formed is of same size as that of object.