calculate the wave number of radiation having frequency of 4×10"k hz
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Answer:
1.33 * 10^6 metre inverse
Explanation:
Given that Frequency of radiation = 4 *10^14 Hz = 4 *10^14 s^-1
We know that required formula is:
Wave length = Speed / Frequency
Wave number = 1/Wavelength
Therefore Wave number = Frequency / speed
Speed of light is 3 * 10^8 m/s
Wave number = 4 *10^14 / 3 * 10^8 = 1.33 * 10^6 m^-1
Answer is 1.33 * 10^6 metre inverse
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