Light - Reflection and Refraction
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Name the type of mirror used in the following situations:
(a) Headlights of a car.
(b) Side /rear-view mirror of a vehicle
(c) Solar furnace.
Support your answer with reason.

(a) Concave mirrors are used as reflectors in headlights of cars. The bulb is located at the focus of the concave mirror and so, the light rays after reflection from the mirror travel over a large distance as a parallel beam of high intensity.  

(b) A convex mirror is used as a side/rear-view mirror of a vehicle because of the following reasons: 
(i) A convex mirror always forms an erect, virtual and diminished image of an object placed anywhere in front of it.
(ii) A convex mirror has a wider field of view than a plane mirror of the same size and haence, covers a wider field of area.

(c) Large concave mirrors are used to concentrate sunlight to produce heat in solar furnaces. Concave mirrors are converging mirrors. 

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