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De Broglie's Hypothesis

The wave natu...

Question

The wave nature of an electron was first given by

A

De-Broglie

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B

Heisenberg

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C

Mosley

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D

Sommerfield

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Solution

The correct option is A
De-Broglie

Louis-Victor de Broglie discovered the wave nature of electrons. He was awarded the Nobel Prize in Physics for this discovery.

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Q. The uncertainty principle and the concept of the wave nature of matter were proposed by _______and _________ respectively.
1. De Broglie, Heisenberg
2. Heisenberg; de Broglie
3. Heisenberg; Einstein
4. Einstein; de Broglie

Q. De Broglie proposed the wave nature of electrons suggesting matter waves.
Find the momentum, speed and De-Broglie wavelength of an electron with Kinetic energy of

120 e V

Q. Show that Bohr's second postulate can be explained on the basis of de Broglie hypothesis of wave nature of electrons.

Dual nature of matter was proposed by de Broglie in 1923, it was experimentally verified by Davisson and Germer by diffraction experiment. Wave character of matter has significance only for microscopic particles. de Broglie wavelength or wavelength of matter wave can be calculated using the following relation:

λ = \frac{h}{m v}

m

v

' are the mass and velocity of the particle. de Broglie hypothesis suggested that electron waves were being diffracted by the target, much as

X

-rays are diffracted by planes of atoms in the crystals.

Wave nature of electrons is shown by:

The de Broglie equation describes the relationship of wavelength associated with the wave-like nature of an electron and its

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