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The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared region of hydrogen spectrum to the nearest

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Important Questions on Bohr Model, X-Ray Spectra, Wave-Particle Duality

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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 31

The diagram Figure shows the energy levels for an electron in a certain atom. Which transition shown represents the emission of a photon with the most energy.

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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 32
Electrons in a certain energy level n=n1, can emit 3 spectral lines. When they are in another energy level, n=n2, they can emit 6 spectral lines. The orbital speed of the electrons in the orbit
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 33
Three photons coming from excited atomic hydrogen sample are observed, their energies are12.1 V, 10.2 V and 1.9eV. These photons must come from
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 34
If the binding energy of the electron in a hydrogen atom is 13.6eV, the energy required to remove the electron from the first excited state of Li2+ is
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 35
What is the wavelength for doubly ionised lithium ion for the same transition? If λ is the wavelength of a hydrogen atom from the transition n=3 to n=1.
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 36
Which state of triply ionised beryllium Be3+ has the same orbital radius as that of the ground state of hydrogen?
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 37
The excitation energy of a hydrogen like ion in its first excitation state is 40.8 eV. The energy needed to remove the electron from the ion in ground state is,
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12th West Bengal Board
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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 38

Wavelength of light emitted from second orbit to first orbit in a hydrogen atom is