Question

What is meant by spectrum of white light? How can we recombine the components of white light after a prism has separated them? Draw a diagram to illustrate it​

Answer 1

Answer:

Explanation:

The coloured pattern VIBGYOR formed by a prism by splitting the incident white light is called a spectrum. By having two prisms, inverted to each other, one can recombine the light to get white light again

Answer 2

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✒ Light can occur at any frequency or wavelength. List can occur in any combination of frequencies or wavelengths. The color content of light is called its spectrum.

• Dispersion is when color components separate due to the frequency dependence of diffraction angle.
• Basically the speed of light in a dielectric medium like silica glass is slower than in vaxuum or air(close to vacuum) by a factor n called index of refraction and depending on the optical responde to electromagnetic waves in the material atoms.
• This is the cause for dispersion.
• Since in prisms and rainbows rays Cross the boundaries twice the effect is amplified so you see significant separation of rays of different colors.

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