Class 12PhysicsDual Nature of Radiation and matterDavisson-Germer Experiment and Heisenberg Uncertainty Principle
MediumThe wave nature of electrons suggests that they will produce diffraction effects. Davisson and Germer experimentally proved this by diffracting electrons from a crystal. The law of diffraction from a crystal is obtained from the constructive interference of electron waves reflected from the planes of atoms in the crystal. Electrons accelerated by a potential $V$ are diffracted by a crystal. If $d = 1 \ \mathring{A}$ and $i = 30^\circ$,then the value of $V$ should be ........... $V$. $(h = 6.6 \times 10^{-34} \ J \cdot s, m_e = 9.1 \times 10^{-31} \ kg, e = 1.6 \times 10^{-19} \ C)$
- A$2000$
- B$50$
- C$500$
- D$1000$
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Similar Questions
Statement $1$: The Davisson-Germer experiment established the wave nature of electrons. Statement $2$: If electrons possess wave nature,they can undergo interference and diffraction.
Easy
View SolutionMatch List $-I$ (Experiment performed) with List $-II$ (Phenomena discovered/associated) and select the correct option from the options given below:
List $-I$ List $-II$ $(1)$ Davisson and Germer $(i)$ Wave nature of electrons $(2)$ Millikan's oil drop experiment $(ii)$ Charge of an electron $(3)$ Rutherford experiment $(iii)$ Quantisation of energy levels $(4)$ Franck-Hertz experiment $(iv)$ Existence of nucleus
| List $-I$ | List $-II$ |
| $(1)$ Davisson and Germer | $(i)$ Wave nature of electrons |
| $(2)$ Millikan's oil drop experiment | $(ii)$ Charge of an electron |
| $(3)$ Rutherford experiment | $(iii)$ Quantisation of energy levels |
| $(4)$ Franck-Hertz experiment | $(iv)$ Existence of nucleus |
The wave nature of electrons suggests that they will produce diffraction effects. Davisson and Germer experimentally proved this by diffracting electrons from a crystal. The law of diffraction from a crystal is obtained from the constructive interference of electron waves reflected from the planes of atoms in the crystal. When electrons are incident on the crystal plane at an angle $i$ with the normal to the plane,and the distance between the planes is $d$,which of the following equations can be used to calculate the de Broglie wavelength of the electrons if a sharp diffraction peak is obtained?
Easy
View SolutionExplain the arrangement of the Davisson and Germer experiment.
Difficult
View SolutionGiven below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ The beam of electrons shows wave nature and exhibits interference and diffraction.
Reason $R:$ Davisson-Germer experimentally verified the wave nature of electrons.
In the light of the above statements,choose the most appropriate answer from the options given below:
Assertion $A:$ The beam of electrons shows wave nature and exhibits interference and diffraction.
Reason $R:$ Davisson-Germer experimentally verified the wave nature of electrons.
In the light of the above statements,choose the most appropriate answer from the options given below:
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