A. between principal focus and pole
B. between principal focus and centre of curvature
C. at infinity
D. at centre of curvature
Correct Answer: Option C
C. at infinity
A. between principal focus and pole
B. between principal focus and centre of curvature
C. at infinity
D. at centre of curvature
Correct Answer: Option C
C. at infinity
Copyright warnings! Do not copy.