AIPMT MAINS2012Physics-Optics
AIPMT MAINS 2012 Physics Mirrors MCQ Question
Type: MCQ-numerical-Medium-Class 12
A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is:
A
10 cm
B
15 cm
C
2.5 cm
D
5 cm
Correct Answer
Option D
Detailed Explanation
Using the mirror formula, 1/v + 1/u = 1/f, we find the image distances for the ends of the rod. The length of the image is the difference between these image distances, which is 5 cm.
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