Question

Compare tanning effect produced on the skin by UV radiation incident directly on the screen that coming through the glass window

Answer 1

in skin it happen due to present of melannin pigment

Answer 2

Glass windows effectively block most UVB rays and some UVA rays, however some UVA rays can still penetrate through glass windows and cause skin damage. Tanning through a window is greatly reduced due to it blocking much of the UV rays which cause tanning.