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The following diagram indicates the ener...

The following diagram indicates the energy levels of a certain atom when the system moves from `2E` level to `E`, a photon of wavelength `lambda` is emitted. The wavelength of photon produced during its transition from `(4E)/(3)` level to `E` is

A

`lambda//3`

B

`3lambda//4`

C

`4lambda//3`

D

`3lambda`

Text Solution

Verified by Experts

The correct Answer is:
D
`2E - E = (hc)/(lambda) rArr E = (hc)/(lambda)`
`(4E)/(3) - E = (hc)/(lambda') rArr (E)/(3) = (hc)/(lambda') :. (lambda')/(lambda) = 3 rArr lambda' = 3lambda`
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