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Dual Nature of Radiation and Matter
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Wave Nature of Matter
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de Broglie Wavelength
de Broglie Wavelength
7 Mins
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QUICK SUMMARY WITH STORIES
De Broglie Wavelength
2 mins read
Heisenberg Uncertainty Principle
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Important Questions
A proton and an alpha particle both are accelerated through the same potential difference. The ratio of corresponding de-Broglie wavelengths is :
Medium
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An electron (of mass m) and a photon have the same energy E in the range of a few eV. The ratio of the de-Broglie wavelength associated with the electron and the wavelength of the photon is (c = speed of light in vacuum)
Hard
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An electromagnetic wave of wavelength
$λ$
is incident on a photosensitive surface of negligible work function. If the photoelectrons emitted from this surface have the de Brogue wavelength
$λ_{′}$
, then
Hard
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An electron is accelerated from rest through a potential difference of
$V$
volt. If the de Broglie wavelength of the electron is
$1.227×10_{−2}nm$
, the potential difference is :
Medium
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An
$α$
- particle and a proton are accelerated from rest by the same potential. Find the ratio of their de- Broglie wavelength.
Medium
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An electron, an alpha particle and a proton have the same kinetic energy. Which one of these particles has (i) the shortest and (ii) the largest, de Broglie wavelength?
Medium
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If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is :
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Light of wavelength
$500nm$
is incident on a metal with a work function
$2.28eV$
. The de Borglie wavelength of the emitted electron is:
Hard
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Derive an expression for de Broglie wavelength of matter waves.
Medium
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What is the de Broglie wavelength of the electron accelerated through a potential difference of 100 Volt?
Medium
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