Secondary2 Science help. Colours Topic. URGENT!

Question

What would happen if a white light is passed through 2 prism and shown on a white screen.

Note that none of the prism are overturned.

pls help. my test are just 2days later.

i really need help.

pls provide details on it.

and explain pls:D

thx in advance:D

Happy Olympics-Watching:D

Answer 1

A prism breaks up the light so that the entire spectrum. So if you placed a prism in front of a white light onto a white screen, the entire light spectrum would be visible. Pretty huh. I am not sure what would happen if you pass it through two prisms, however I am assuming, becuase the spectrum cannot be broken down again, that the light would stay as it is on the white screen but probably at a different angle as the light is refracted twice rather than before it was refracted once.