Concave minor is used in headlights of vehicles, because it _____.

focuses light from the bulb onto nearby vehicles

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sends parallel rays

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fits well into the shape of the headlight

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is cheaper than other mirrors

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Solution

The correct option is B sends parallel rays
When the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances) and at infinity they are approximately parallel. Hence, concave mirrors are used in the headlights of vehicles.

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Similar questions

Q. In the headlight of a vehicle, the bulb should be placed at the of the concave reflector.

Q. At what position will you place a bulb in a headlight of a car so as to get parallel beam of light from the headlight?

Q. In torches, search lights and headlights of vehicles the bulb is placed:

A spherical concave mirror focuses all rays parallel to its principal axis exactly onto the focus.

Question 12
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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Concave minor is used in headlights of vehicles, because it _____.

The correct option is B sends parallel raysWhen the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances) and at infinity they are approximately parallel. Hence, concave mirrors are used in the headlights of vehicles.

The correct option is B sends parallel rays
When the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances) and at infinity they are approximately parallel. Hence, concave mirrors are used in the headlights of vehicles.