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PhysicsModern PhysicsDe Broglie & Matter WavesMedium2 minPYQ_2021
PhysicsMediumstatement

Consider two separate ideal gases of electrons and protons having same number of particles. The temperature of both the gases are same. The ratio of the uncertainty in determining the position of an electron to that of a proton is proportional to:

Options:

Answer:
A
Solution:

K.E.=32kT
⇒p22m=32kT
⇒p=3kT m
From Heisenberg uncertainty principle
∴ ΔxΔp=h4π
Δx=h4πΔp=h4π3kTm
∴ Δx∝1m
∴ ΔxeΔxp=mpme

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:De Broglie & Matter Waves
⏱ 2mℹ️ Source: PYQ_2021

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