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Planck's Quantum Hypothesis

The experimen...

Question

The experimental evidence for dual nature of matter comes from:

A

Plank's experiment

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B

De Broglie's experiment

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C

Davisson and Germer's experiment

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D

Ruthrford's experiment

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Solution

The correct option is C Davisson and Germer's experiment

The Davisson-Germer experiment demonstrated the wave nature of the electron, confirming the earlier hypothesis of deBroglie.

Putting wave-particle duality on a firm experimental footing, it represented a major step forward in the development of quantum mechanics.

The Bragg law for diffraction had been applied to x-ray diffraction, but this was the first application to particle waves.

Hence, the correct option is $C$

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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:

Q. The Davisson-Germer experiment that first demonstrated the wave nature of matter used electrons accelerated to 54 V. Determine the wavelength

(in A^{\circ})

of the electrons in the Davisson-Germer experiment. (Answer upto 2 decimal places)

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.

De-Broglie equation is obtained by combination of which of the following theories?

Q. Davisson and Germer experiment represents _______ nature of the electron.

Q. In the young double slit experiment initially equal intensities are coming out of the two slits S and S now

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