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12th Odisha Board
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In Rutherford's experiment, the number of α particles scattered through an angle of 60° by a silver foil is 200 per minute. When the silver foil is replaced by a copper foil of the same thickness, the number of α particles scattered through an angle of 60° per minute is

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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 106
The binding energy of electron in the lowest orbit of hydrogen atom is 13.6 eV. The energies required in electron-volt to remove an electron from three lowest orbit of hydrogen atom in eV are
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 107
Ionisation energy of an hydrogen atom in its ground state is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 108
The ionisation potential energy of hydrogen atom is 13.6 eV. The energy required to remove an electron in the second orbit of the hydrogen atom will be
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 109
The difference in angular momentum associated with the electron in the two successive orbits of hydrogen atom is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 110
In the following transitions of the hydrogen atom, the one which gives the absorption line of highest frequency is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 111
As the quantum number increases, the difference of energy between consecutive energy-levels
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 112
A continuous band of radiation having all wavelengths from about 1000 A° to 10000 A° is passed through a gas of monoatomic hydrogen. In the emission spectrum, one can observe the entire
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 16 - Atomic Physics>MODEL QUESTIONS>Q 113
The work that must be done to remove an electron from an atom is called its