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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsDe Broglie & Matter WavesEasy2 minPYQ_2020

PhysicsEasysingle choice

In experiment of Davisson-Germer, emitted electron from filament is accelerated through voltage V then de-Broglie wavelength of that electron will be ______m.

Options:

Answer:

Solution:

Kinetic energy $\frac{1}{2} m v^{2} = e V$

$v = \sqrt{\frac{2 e V}{m}}$

Wavelength $λ = \frac{h}{m v}$

$λ = \frac{h}{m \sqrt{\frac{2 e V}{m}}} = \frac{h}{\sqrt{2 e V m}}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:De Broglie & Matter Waves

⏱ 2mℹ️ Source: PYQ_2020

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