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Q: If a parallel beam of light is not parallel to the principal axis of a concave mirror, then such rays will converge at the ………. .
  • A. principal focal plane
  • B. infinity
  • C. centre of curvature
  • D. pole
Correct Answer: Option A - If a parallel beam of light is not parallel to the principal axis of a concave mirror, then such rays will converge at the principal focal plane.
A. If a parallel beam of light is not parallel to the principal axis of a concave mirror, then such rays will converge at the principal focal plane.

Explanations:

If a parallel beam of light is not parallel to the principal axis of a concave mirror, then such rays will converge at the principal focal plane.