Concave mirror is used in headlights of vehicles, because it
A. focuses light from the bulb onto nearby vehicles
B. sends parallel rays
C. fits well into the shape of the headlight
D. is cheaper than other mirrors
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Correct option (b) sends parallel rays
Explanation:
Concave mirrors are commonly used in not only vehicles headlights but also in torches and search-lights to get powerful parallel beams of light to focus the light at the longer distances by placing the source of light at the focus of the Concave mirrors.