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Atoms — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsAtoms2 Marks
Question
The photons of continuous frequency range are passing through rarafied hydrogen pattern. Three absorbed lines are shown in Fig.
Image
(i) To which series of hydrogen spectrum, these lines are related?
(ii) Out of them which has maximum wavelength?
✓

Answer

(i) I = Lyman series, II = Balmer series, III = Paschen series.
(ii) Since $\lambda=\frac{h c}{\Delta E }$; For maximum wavelength, $\Delta E$ should be minimum. It is for III line. So its wavelength will be maximum.

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