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Q: –––––––– is a suitable mirror that can be used to focus sunlight to a point.
  • A. A glass plate
  • B. A concave mirror
  • C. A convex mirror
  • D. A plane mirror
Correct Answer: Option B - A concave mirror has reflective surface that is curved inward and away from the light source. The concave mirrors reflect light inward to one focal point.
B. A concave mirror has reflective surface that is curved inward and away from the light source. The concave mirrors reflect light inward to one focal point.

Explanations:

A concave mirror has reflective surface that is curved inward and away from the light source. The concave mirrors reflect light inward to one focal point.