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12th Odisha Board
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Earn 100

Ionisation potential of the hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. The spectral lines emitted by the hydrogen atoms according to Bohr's theory will be

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Important Questions on Atomic Physics

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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 97
When the electron in the hydrogen atom jumps from the second orbit to the first orbit, the wavelength of the radiation emitted is λ. When the electron jumps from the third orbit to the first orbit, the wavelength of the emitted radiation would be
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12th Odisha Board
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Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 98
The energy of an electron in the nth orbit of the singly ionised helium atom is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 99
What is deduced from the fact that when α particles are fired at a fine gold leaf it is found that most of them pass through with little or no deflection
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 100
According to Bohr's postulates which of the following quantities takes discrete values
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 101
According to Bohr's model of the hydrogen atom
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 102
According to classical theory, Rutherford atom was
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 103
The radius of the atom is of the order of 
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 104
The speed of an electron in the orbit of the hydrogen atom in the ground State is