Question

Calculate the frequency of visible light having wavelength 3000 A degree traveling in a vacuum

Answer 1

Answer: 100 000 Hz

Explanation:

Speed = frequency × wavelength

So f=(3×10^8)÷3000

This gives frequency of 100 000 Hz

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Answer 2

Answer:

v=nu.lambda

nu =v/lambda

3×10^8/3×10^3

so frequency=10^5