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Q: Which of the following points always lie (s) on the principal axis of a spherical mirror? (A) Centre of curvature (B) Point of incidence (C) Pole
  • A. Both (A) and (B)
  • B. Only (A)
  • C. Only (B)
  • D. Both (A) and (C)
Correct Answer: Option D - In spherical mirror pole and centre of curvature are always lies on the principal axis of a spherical mirror.
D. In spherical mirror pole and centre of curvature are always lies on the principal axis of a spherical mirror.

Explanations:

In spherical mirror pole and centre of curvature are always lies on the principal axis of a spherical mirror.