Easy MCQ +4 / -1 PYQ · JEE Mains 2021

If an electron is moving in the nth orbit of the hydrogen atom, then its velocity (vn) for the nth orbit is given as :

  1. A ${v_n} \propto {1 \over n}$ Correct answer
  2. B v<sub>n</sub> $\propto$ n<sup>2</sup>
  3. C v<sub>n</sub> $\propto$ n
  4. D ${v_n} \propto {1 \over {{n^2}}}$

Solution

We know velocity of electron in n<sup>th</sup> shell of hydrogen atom is given by<br><br>$v = {{2\pi kZ{e^2}} \over {nh}}$<br><br>$\therefore$ $v \propto {1 \over n}$

About this question

Subject: Physics · Chapter: Atoms and Nuclei · Topic: Bohr's Model of Hydrogen Atom

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