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Because different colours have different have speeds in a prism , as refractive index depends on speed of the object therefore different colours have different refractive indexes

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Q: Why does a prism cause white light to separate into the spectrum?
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Related questions

Why does a prism cause white light to separate into colors of spectrum's?

Light bends in glass dependent on its thickness. Violet comes from the thin part and red from the thick part of a prism.


Why does a prism cause white light to separate into colors of a spectrum?

Light bends in glass dependent on its thickness. Violet comes from the thin part and red from the thick part of a prism.


Why does a prism cause white light to separate into colors of the color spectrum?

Light bends in glass dependent on its thickness. Violet comes from the thin part and red from the thick part of a prism.


What did newtons use to separate white light into a spectrum of colors?

a prism


Which scientific tool can also separate white light into a spectrum of colors?

A prism


How does light separate into the colors of the visible spectrum?

When light goes through a prism, it separates into a rainbow.


Where you see a spectrum of colours?

If you pass white light through a prism, it will separate out into the individual colors of the visible spectrum.


What did newton use to separate white light into spectrum of colors?

Newton Discovered that White light comprised of the entire spectrum of the visible wave length. When white light was shone through a triangular prism, it refracted the entire color spectrum.


Why does a prism cause white light to separete into the colors of the spectrum?

Be cause it's white


What is a prism and what does it do to a white light?

They separate light into the light spectrum. If a beam of light shines through a prism, a rainbow of color will show out through the opposite side.


What happens when mixes different light together to a prism?

If you separate "white" light in a prism, you get the visible spectrum, (ROYGBIV). If you get that back together, you get "white" light. If you mix red and blue, you get purple, and so on.


Does a prism separate light into only the visible spectrum or the entire spectrum?

Well, seeing as it seperates visible light, it follows that it only seperates that visible light into the visible spectrum. You can't make radiowaves or UV rays out of visible light.