A) At zero
B) At infinity
C) At a distance of 2f
D) At a distance f/2
Correct Answer: B
Solution :
When a real object is placed infront of a convex lens of focal length 'f' at its principal focus, then the image is formed at infinity. \[\because \]\[-\frac{1}{f}=\frac{1}{v}-\frac{1}{f},\frac{1}{v}=0\](or) \[v=\infty \]You need to login to perform this action.
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