Question

a plane mirror reflects sunlight to form a bright patch on the wall. but a crushed aluminium foil gives a less bright patch ​

Answer 1

Explanation:

The molecules on the top layer of Tin absorb energy from the light waves. So the amount of light reflected back on to the wall is reduced. So the image is well spread out and is of less intensity.

Answer 2

Explanation:

The molecules on the top layer of Tin absorb energy from the light waves. So the amount of light reflected back on to the wall is reduced. So the image is well spread out and is of less intensity.