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If $λ_{1}$ and $λ_{2}$ are the wavelengths of the third member of Lyman and first member of the Paschen series respectively , then the value of $λ_{1} : λ_{2}$ is:

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1:9

7:108

1:3

7:135

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detailed solution

Correct option is D

Case 1 : hcλ1=13.6112−142Case 2: λcλ2=+13.6132−142∴λ1λ2=16−9/9×1616−1/1×16=7135

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If λ1 and λ2 are the wavelengths of the third member of Lyman and first member of the Paschen series respectively , then the value of λ1:λ2 is:

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Ready to Test Your Skills?

free study material

If $λ_{1}$ and $λ_{2}$ are the wavelengths of the third member of Lyman and first member of the Paschen series respectively , then the value of $λ_{1} : λ_{2}$ is: