A wave of the wavelength 5900Å emitted b...

A wave of the wavelength `5900Å` emitted by an atom or molecule must have some finite total length which is known as coherence length. For the mentioned wave, this length is 2.4 cm. The number of oscillations in this length will be.

`4.068 xx10^(4)` Hz

`4.068 xx10^(5)` Hz

`4.068 xx10^(6)` Hz

`4.068 xx10^(7)` Hz

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