Blocking some colours from the spectrum?

Question

If I shined white light through a prism, it would result in a spectrum, but if i blocked some of the colours that came out of the prism, then put another prism (as if to combine the spectrum into white light again) after the first prism, would my result be a different colour?

Answer 1

it is because of scattering of light in prism

as the result  pure spectrum will obtained on the screen