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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsDe Broglie & Matter WavesEasy2 minPYQ_2020

PhysicsEasysingle choice

If the uncertainty in the position of an electron is $10^{- 10} m$ , then what be the value of uncertainty in its momentum in $kg m s^{- 1} ? (h = 6.62 \times 10^{- 34} J s)$

Options:

Answer:

Solution:

$Δ x Δ P \geq \frac{h}{2 π}$

$\Rightarrow Δ P \geq \frac{6.62 \times 10^{- 34}}{2 \times 3.14 \times 10^{- 10}}$

$Δ P \geq 1.05 \times 10^{- 24}$

$= 1.0536 \times 10^{- 24} kg m s^{- 1}$

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

⏱ 2mℹ️ Source: PYQ_2020

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