Will a spectrum be formed if a Ray of monochromatic light falls on a prism ? Explain

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Solution

No never.
A spectrum is formed when a polychromatic light falls on a prism because the light splits into its constituent colours or constituent different frequencies.

A monochromatic has just one frequency(or the same frequency ) so it does not form a spectrum.

There might be some scattering of the light if the glass is translucent(not absolutely transparent) but it will DEFINITELY NOT FORM A SPECTRUM.

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Boojho shines monochromatic light from a laser torch on a prism. Will he be able to observe a band of seven colours? Explain with a reason.

When a white light ray falls on a prism, the ray at its first surface suffers:

(μ = 1.5)

60^{o}

(s i n 48^{o} 36^{'} = 0.75)

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