JEE Main 2017PhysicsAtomic PhysicsMediumMCQ

JEE Main 2017 — Atomic Physics Question with Solution

JEE Main 2017 (09 Apr Online)

Question

The acceleration of an electron in the first orbit of the hydrogen atom (n=1) is :

Choose an option

Show full solutionCorrect option: D
Correct answer
Dh24π2m2r3

Step-by-step explanation

For H-atom  n=1

mv2r=14πϵoe2r2  ...1

mvr=h2π  ...2

On squaring (2)

m2v2r2=h24π2

On dividing both sides by r3 ,

m2v2r=h24πr3 ⇒v2r=h24π2r3m2

Acceleration= h24π2r3m2.

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About this question

This is a previous-year question from JEE Main 2017, covering the Atomic Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.