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Class XII Physics Atoms 2
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Question 1
The value of angular momentum for He+ ion in the first Bohr orbit is:
Question 2
What is the wavelength of the radiation emitted when the electron in a H-atom jumps from n = ∞ to n = 2?
Question 3
Find the binding energy of a H-atom in the state n = 2 –
Question 4
The energy levels of a certain atom for 1st, 2nd and 3rd levels are E, 4E/3 and 2E respectively. A photon of wavelength λ is emitted for a transition 3 → 1. What will be the wavelength of emission for transition 2 → 1
Question 5
If n >> 1, then the dependence of frequency of a photon, emitted as a result of transition of electron from nth orbit to (n–1)th orbit, on n will be-
Question 6
In which of the following transitions will the wavelength be minimum?
Question 7
If the wavelength of photon emitted due to transition of electron from third orbit to first orbit in a hydrogen atom is λ, then the wavelength of photon emitted due to transition of electron from fourth orbit to second orbit will be -
Question 8
In hydrogen atom Hα - line arises due to transition n = 3 →n = 2. In the spectrum of singly ionised helium there is a line having the same wavelength as the Hα line. This is due to the transition -
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Sep 16JEE & BITSAT