Question

To get an image larger than the object one can use

• A. a convex mirror but not a concave mirror.
• B. a concave mirror but not a convex mirror.
• C. either a convex mirror or a concave mirror.
• D. a plane mirror.

Answer 1

The correct option is B a concave mirror but not a convex mirror.

A plane mirror always forms the image of same size as that of object.

However a concave mirror forms an enlarged image for positions:
(i) object between $\text{'C'}$ and $\text{'F'}$ : Image is enlarged, real and inverted.
(ii) object between $\text{'P'}$ and $\text{'F'}$: Image is virtual, erect and enlarged (magnified).
Thus concave mirror is correct choice.

A convex mirror always forms virtual, erect and diminished image.