Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 5

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The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion. The atomic number $Z$ of hydrogen like ion is

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Important Questions on Atomic Physics

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 6

Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelengths λ1:λ2 emitted in the two cases is:

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 7

An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquired as a result of photon emissiór will be

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 8

Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is:

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 9

Hydrogen atom in ground state is excited by a monochromatic radiation of

λ = 975 Å

. Number of spectral lines in the resulting spectrum emitted will be

(R = 1.09 \times 10^{7} m^{- 1})

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 11

If an electron in a hydrogen atom jumps from the

3 rd

orbit to the

2 nd

orbit, it emits a photon of wavelength

λ

. When it jumps from the

4 th

orbit to the

3 rd

orbit, the corresponding wavelength of the photon will be

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 13

The ratio of kinetic enerav to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 14

In a hydrogen like atom electron make transition from an energy level with quantum number nn to another with quantum number (n−1) if n>>1, the frequency of radiation emitted is proportional to :

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Alpha Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise-3>Q 15

Find the energy required for the electron excitation in $L i^{2 +}$ from the first to the third Bohr orbit .