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Q: The focal length of a convex mirror is ..........
  • A. zero
  • B. negative
  • C. positive
  • D. infinite
Correct Answer: Option C - The focal length of a convex mirror is positive and the focal length of a concave mirror is negative.
C. The focal length of a convex mirror is positive and the focal length of a concave mirror is negative.

Explanations:

The focal length of a convex mirror is positive and the focal length of a concave mirror is negative.