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Physics

Grade-8

Easy

Question

In the electromagnetic spectrum, when the wavelength increases

The frequency also increases
The frequency decreases
The energy also increases
The frequency increases, but the energy decreases

hint Hint:

When wavelength increases frequency decreases in electromagnetic waves

The correct answer is: The frequency decreases

from the equation V = fλ

Here the velocity(v) is constant so fλ =Constant

so λ is inversely propoertional to frequency(f)

Hence if wavelength increases, frequency decreases.

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