A. at the centre of curvature
B. at the radius of curvature
C. at infinity
D. 10 cm from the focus
Correct Answer:
Option A – at the centre of curvature
A. at the centre of curvature
B. at the radius of curvature
C. at infinity
D. 10 cm from the focus
Correct Answer:
Option A – at the centre of curvature
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