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When a double ionized lithium ion is excited from ground state to first excited state, then

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Important Questions on Atoms

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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 12
If potential energy of a proton and an electron system is given by U=-Ke22R3, where e is the charge of the electron and R is the radius of orbit. Then
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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 13
Which one of the following is correct statement in the context of X-rays generated from X-ray tube?
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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 13
If the largest wavelength of a certain series of hydrogen spectrum is 1875 nm. Then smallest wavelength of that series will be
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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 2

Statement-1 : The Bohr model of the hydrogen atom does not explain the fine structure of spectral lines.

and
Statement-2: The Bohr model does not take into account the spin of the electron

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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 3

STATEMENT-1 : If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X-rays do not change.

because

STATEMENT-2 : When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.

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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 1
A gas of hydrogen like ions is prepared in such a way that ions are only in the ground state and the first excited state. A monochromatic light of wavelength 1216 Å is absorbed by the ions. The ions are lifted to higher excited states and emit radiations of six wavelengths. Find the principal quantum number of the final excited state.
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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 2
An X-ray tube operates at the voltage of 40 kV. Find the ratio of the shortest wavelength of X-ray produced to the de-Broglie wavelength of the incident electron. The specific charge of the electron is 1.8×1011C kg–1.
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Gamma Question Bank for Engineering Physics>Chapter 28 - Atoms>Assignment>Q 3
Consider a hydrogen like atom whose energy in n th excited state is given by En=-13.6Z2n2. When this excited atom makes a transition from excited state to ground state, most energetic photons have energy Emax=52.224 eV and least energetic photons have energy Emin=1.224 eV. Find the state of excitation.