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Light Reflection and Refraction
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01/12/2020 2:41 pm
Topic starter
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
1 Answer
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01/12/2020 2:43 pm
(b) very near to the focus of the reflector
Explanation:
When source of light is placed very near to the focus of the reflector which are concave in shape, the reflected light becomes parallel to the principal axis.