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In torches, search lights and headlights of vehicles the bulb is placed
A. between the pole and the focus of the reflector
B. very near to the focus of the reflector
C. between the focus and centre of curvature of the reflector
D. at the centre of curvature of the reflector

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Correct Answer - B
In torches, search lights and head lights of vehicles, the bulb is placed very close to the focus of the reflector, so that a parallel beam of light is obtained.

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