Question

Calculate frequency of light,
whose wavelength
is 400ºA

Answer 1

Answer:

We know that ,

frequency = speed of light/ wavelength

So, speed of light = 3 × 10 ⁸ m/s

Now putting the values ,

frequency = 3× 10⁸/ 400

frequency = 750000 hertz

= 750 kilohertz

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