Question

which mirror is used in solar furnaces and why

Answer 1

Concave mirrors are used in solar furnaces , because concave mirrors are the only type of mirror that reflects light in toward a single focal point .

Answer 2

Answer:  

‘Concave mirror’ is used in solar furnace.

Explanation:

This is because the solar furnace use the rays of light to burn a material. Now concave mirror are the only type mirror which can converge a beam of ray towards a particular point.  

Infinite ‘rays of light’ from the sun gets diverged into the focal point of the concave mirror. Hence a lot of heat is generated there and this is used in the formation of solar furnace.