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33. In torches, search lights and headlights of vehicles the bulb is placed [NCERT Exemplar Problems] (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

33. In torches, search lights and headlights of vehicles the bulb is placed [NCERT Exemplar Problems]
(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

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 8741 Points
23 days ago
Answer: b Explanation: (b) When source of light is placed verg near to the focus of the reflector which are concave in shape, the reflected light becomes parallel to the principal axis.

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