Question:
On moving from focus towards the pole, the magnification in a concave mirror:
On moving from focus towards the pole, the magnification in a concave mirror:
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Magnification in a concave mirror increases as the object approaches the mirror.
Updated On: Oct 27, 2025
- increases
- decreases
- remains constant
- none of these
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The Correct Option is A
Solution and Explanation
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 \( \mathbf{(A) \text{increases}} \).
\[ m = \frac{-v}{u} \] 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 \( \mathbf{(A) \text{increases}} \).
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