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Q.

The following diagram indicates the energy levels of a certain atom when the system moves from 2E level to E, a photon of wavelength λ is emitted. The wavelength of photon produced during its transition from 4E3 level to E is

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a

λ/3

b

3λ/4

c

4λ/3

d

3λ

answer is D.

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Detailed Solution

2E-E=hcλ⇒E=hcλ 4E3-E=hcλ'⇒E3=hcλ'  ∴λ'λ=3⇒λ'=3λ
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