Question

On moving from focus towards the pole, the magnification in a concave mirror:

• A. increases
• B. decreases
• C. remains constant
• D. none of these

Hint:

Magnification in a concave mirror increases as the object approaches the mirror.

Answer 1

The Correct Option is A

The magnification of a concave mirror is given by:
\[ m = \frac{-v}{u} \] As the object moves from the focus towards the pole, the image moves from infinity to the mirror itself, becoming virtual and highly magnified. Hence, the magnification increases.
Thus, the correct answer is \( \mathbf{(A) \text{increases}} \).