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The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is : (c = speed of electromagnetic waves)

1. 1:1
2. 1:c
3. c:1
4. 1:c²

Correct answer: 1:1

Solution

In an electromagnetic wave, the electric field and magnetic field contribute equally to the intensity, as intensity is proportional to the square of the amplitudes of both fields.

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