Question

why those obtaining the image of the sun on a paper with the help of a concues mirror burn the paper ​

Answer 1

Answer:

The image obtaining of the sun on a paper with the help of a concave mirror burn the paper because the ray of the sun which comes from infinite distance forms the image at the focus of the concave mirror. Hence large amount of heat is generated due to infinite rays of sun meeting at the focus which in turns burns the paper.