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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsDe Broglie & Matter WavesMedium2 minPYQ_2021

PhysicsMediumstatement

A moving proton and electron have the same de-Broglie wavelength. If $K$ and $P$ denote the $K . E .$ and momentum respectively. Then choose the correct option :

Options:

Answer:

Solution:

$λ_{d e b} = \frac{h}{p} = \frac{h}{\sqrt{2 m K E}}$
If $λ$ is same the $P$ will be same
$K E \propto 1 / m$
$m_{p} > m_{e} \Rightarrow K_{p} < K_{e}$

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

⏱ 2mℹ️ Source: PYQ_2021

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