Question

The image of an ant in a concave mirror is erect and goes on increasing as the ant moves along the principal axis. The direction of motion of the ant is:

• A. from focus to centre of curvature
• B. from focus to pole
• C. from pole to focus
• D. none of these

Hint:

In concave mirrors, virtual and erect images are formed when the object is between the pole and the focus.

Answer 1

The Correct Option is C

In a concave mirror, an erect and magnified image is formed only when the object is placed between the pole and the focus. As the ant moves from the pole towards the focus, its image increases in size.
Thus, the correct answer is \( \mathbf{(C) \text{from pole to focus}} \).