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Byju's Answer
Standard XII
Physics
Energy Levels
The clarifica...
Question
The clarification of discrete energy levels in atoms was first given experimentally by :
A
Thomsons experiment
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B
Millikans oil drop experiment
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C
Frank - Hertz experiment
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D
Leonard experiment
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Solution
The correct option is
A
Frank - Hertz experiment
The clarification of discrete energy levels in atoms was first given by frank- Hert experiment.
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Similar questions
Q.
Match List–I (Fundamental Experiment) with List–II (its conclusion) and select the correct option from the choices given below the list
List-1
List-2
(A) Franck-Hertz Experiment
(i) Particle nature of light
(B) Photo-electric experiment
(ii) Discrete energy levels of atom
(C) Davison – Germer Experiment
(iii) Wave nature of electron
(iv) Structure of atom
Q.
Match List - I (Fundamental Experiment) with List - II (its conclusion) and select the correct option from the choices given below the list
List I
List II
(A)
Franck-Hertz Experiment
(i)
Particle nature of light
(B)
Photo-electric experiment
(ii)
Discrete energy level of atom
(C)
Davison-Germer Experiment
(iii)
Wave nature of electron
(iv)
Structure of atom
Q.
In a Frank-Hertz experiment, an electron of energy
5.6
eV
passes through mercury vapour and emerges with an energy
0.7
eV
. The minimum wavelength of photons emitted by mercury atoms is close to:
Q.
Match List - I (Experiment performed) with List - II (Phenomena discovered/ associated) and select the correct option from the options given below the lists :
List - I
List - II
(a)
Davisson and Germer Experiment
(i)
Wave nature of electrons
(b)
Millikan's oil drop experiment
(ii)
Charge of an electron
(c)
Rutherford experiment
(iii)
Quantisation of energy levels
(d)
Franck - Hertz experiment
(iv)
Existence of nucleus
Q.
In a Frank-Hertz experiment, an electron of energy 5.6 eV passes through mercury vapour and emerges with an energy 0.7 eV. The minimum wavelength of photons emitted by mercury atoms is close to