why can't we see dispersion of light through a glass slab.

Asked by reema saxena | 28th Dec, 2013, 10:32: PM

Expert Answer:

You can think of a rectangular glass block as equivalent to two prisms joined along the diagonal. So, while first prism splits white light into spectrum, the second prism will undo it so light emerging from glass slab will be white again.

Answered by  | 29th Dec, 2013, 09:25: PM

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