Question

When white light is passed through a prism, it will be reflected back to the viewer be blocked by the prism disperse into the separate colors of the visible light spectrum?

Answer 1

When white light is passed through a clear, untinted glass prism,
a tiny bit of the light is reflected back to its source, and a tiny bit
of the light is absorbed inside the prism and never seen or heard
from again.

The majority of the light is dispersed, and comes out of the prism
spread out into all of the infinite colors of the visible light spectrum.