Q.

In the following energy level diagram, when  an atom makes transition from 2 E energy level to E energy level, then it emits a photon of wavelength L The wavelength corresponding to transition from 4 E / 3 energy level to E energy level will be

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a

λ/3

b

3/λ

c

3λ

d

3λ/4

answer is C.

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Detailed Solution

When the atom makes transition from energy level Z E to energy level E, then 2E−E=hc/λ or E=hc/λ  When the atom makes transition from (4 E / 3) to E, we have 4E3−E=hcλ′  or  E3=hcλ′ λ′λ=3  or  λ′=3λ
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In the following energy level diagram, when  an atom makes transition from 2 E energy level to E energy level, then it emits a photon of wavelength L The wavelength corresponding to transition from 4 E / 3 energy level to E energy level will be