Question

Why are concave mirror used in solar diveces?
Why are the mirrors fitted on the outside of cars convex?
Why does obtaining the image of the Sun on paper with the help of a concave mirror burn the paper?

Answer 1

Parallel Sunday’s will converge to the focus of concave mirror,so solar devices use concave mirrors

Convex mirrors are used in cars to provide a wider field view

The sun’s rays are concentrated in the focus of the concave mirror ,due to extensive heat converging,that area starts to burn to make a hole in the paper!!