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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsAtomic structureEasy2 minPYQ_2020

PhysicsEasysingle choice

A hydrogen atom is in fifth excited state. When the electron jumps to ground state, the velocity of recoiling hydrogen atom is

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Answer:

Solution:

$Δ E = 13.6 (\frac{1}{1^{2}} - \frac{1}{6^{2}})$
$Δ E = 13.22 eV$
$p = \frac{Δ E}{c}$
$\Rightarrow v = \frac{Δ E}{m C} = \frac{13.22 \times 1.6 \times 1 0^{- 19}}{1.67 \times 1 0^{- 27} \times 3 \times 1 0^{8}} = 4.2 m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Atomic structure

⏱ 2mℹ️ Source: PYQ_2020

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