Question

3. Which of the following mirrors are used to get powerful parallel beams of light in headlights?
(a) Plane mirrors
(b) Convex mirrors
(c) Concave mirrors
(d) Both (a) and (c)
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Answer 1

3. Which of the following mirrors are used to get powerful parallel beams of light in headlights?

(a) Plane mirrors

(b) Convex mirrors

(c) Concave mirrors

(d) Both (a) and (c)

Answer: (c) Concave mirrors