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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsDe Broglie & Matter WavesEasy2 minPYQ_2018

PhysicsEasysingle choice

An electron moving with speed $v_{1}$ has wavelength $λ_{1}$ and another electron moving with speed $v_{2}$ has wavelength $λ_{2}$ , find $(v_{1}^{2} - v_{2}^{2})$ . ( $m_{e} =$ mass of electron)

Options:

Answer:

Solution:

$v_{1}^{2} - v_{2}^{2} = \frac{p _{1}^{2}}{2 m _{e}} - \frac{p _{2}^{2}}{2 m _{e}} = \frac{h ^{2}}{2 m _{e}} (\frac{1}{λ _{1}^{2}} - \frac{1}{λ _{2}^{2}})$

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

⏱ 2mℹ️ Source: PYQ_2018

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