What is the wave number of an electromagnetic radiation whose frequency is 3 1015 hz ?
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Answer:
Given : Frequency of the electromagnetic wave = 31015 Hz .
To find : Wave number
Definition: Wave number is defined as the number of waves in a unit length. In simple words, it is the reciprocal of Wavelength.
Formula : wave number = 1/wavelength.
Calculation:
wavelength = (velocity of light)/freq.
= (3*10^8 )/31015
= 9.67 *10^3
= 9670 metres.
Wavenumber = 1/9670
= 0.00010341
Answer is 0.00010341
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