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Q.

Is it true a concave mirror is used in the design of solar furnaces?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
A concave mirror is used as a reflector in the design of solar furnaces because they converge the parallel sun rays at a point. Concave mirrors are the only types of mirrors that reflect sunlight towards a single focal point. This eventually increases the temperature of the furnace.
 
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