Question

the conclave reflecting serface of torch got rust. what effect would this have on the beam of light from the TORCH?

Answer 1

All reflective surfaces have three components, a specular component that acts like a normal mirror, a diffuse component that scatters light in a Lambertian Cosx type pattern, and an absorptive component. No matter how perfect you think a mirror is there are still these three components. As a mirror would rust the specular component would go down while the the other two would go up.

Answer 2

Answer:

Explanation:

Reflection of light can't occur from rust surface of torch so beam of light will diminish. If the rusting is too much no light beam can pass from such surface.