Question #fe10d
1 Answer
Nov 24, 2017
Concave mirror.
Explanation:
A concave mirror is a converging mirror. The rays incident parallel on the reflecting surface, pass trough the focus (focal point) after reflection.
All the rays coming from the distant light source will reflect and converge at the focus, hence an object placed at the focus will receive maximum intensity of light and may start fire.
This method is used in solar cooking. A large reflective concave disc is used to concentrate the sun rays at the focus. The food is kept at the focus, hence receiving maximum heat.
A convex mirror is a diverging mirror. So, the reflected rays never meet at a point. So, no chance of heating or fire.
