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12th West Bengal Board
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The ratio of minimum wavelength of Lyman and Balmer series will be 

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

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 9
According to the Bohr's atomic model, the relation between principal quantum number (n) and radius of the orbit (r) is
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12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 10
An electron is moving in an orbit of a hydrogen atom from which there can be a maximum of six transitions. An electron is moving in another hydrogen atom from which there can be a maximum of three transition. The ratio of the velocities of the electrons in these two orbits is
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 11
ν1 is the frequency of the series limit of the Lyman series, ν2 is the frequency of the first line of the Lyman series and ν3 is the frequency of the series limit of the Balmer series. Then,
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12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 12

Two energy levels of an electron in an atom are separated by 2.3eV. The frequency of radiation emitted when the electrons go from higher to lower level is

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12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 13
The wavelength of radiation emitted is λ0 when an electron jumps from the third to the second orbit of the hydrogen atom. For the electron which jumps from the fourth to the second  orbit of hydrogen, the wavelength of radiation emitted will be
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 14
The orbital frequency of an electron in the hydrogen atom is proportional to 
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12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 15
The product of linear momentum and angular momentum of an electron of the hydrogen atom is proportional to nx where x is?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 20 - Bohr Model, X-Ray Spectra, Wave-Particle Duality>EXERCISE 20>Q 16
Which of the following transitions in the Balmer series for hydrogen will have the longest wavelength?