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The wave emitted by any atom or molecule...

The wave emitted by any atom or molecule must have some finite total length which is known as the coherence length. For sodium light, this length is 2.4cm. The number of oscillations in this length will be Given `lambda = 5900 A^(0)`

A

`4.068 xx10^(4)` Hz

B

`4.068 xx10^(5)` Hz

C

`4.068 xx10^(6)` Hz

D

`4.068 xx10^(7)` Hz

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