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Question

what do you mean by monochromatic radiation and commutaror?

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Solution

Hi,
Monochromatic Radiation means the electromagnetic radiation of a single frequency. In realty, no source of electromagnetic radiation is purely monochromatic.
For e.g. the sodium lamp with the wavelength of 589.3nm is the source of monochromatic radiation.
Commutator is a rotatory switch used to change the direction of current. A DC motor is a device where commutator is used to change the direction of current.


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