AIIMS2018Physics-Modern Physics

AIIMS 2018 Physics Bohr's Model MCQ Question

Type: MCQ-numerical-Easy-Class 12

In second orbit of H\text{H} atom what is velocity of e\text{e}^-.

A

2.18×106 m/sec2.18 \times 10^6\text{ m/sec}

B

3.27×106 m/sec3.27 \times 10^6\text{ m/sec}

C

10.9×105 m/sec10.9 \times 10^5\text{ m/sec}

D

21.8×106 m/sec21.8 \times 10^6\text{ m/sec}

Correct Answer

Option A

Detailed Explanation

The velocity of the electron, calculated as v=2.18×106×12=1.09×106m/sv = 2.18 \times 10^6 \times \frac{1}{2} = 1.09 \times 10^6 \, \text{m/s}, is a representation of the speed of an electron in a hydrogen atom, specifically in the context of the Bohr model. This value is significant as it reflects the quantized nature of electron velocities in atomic orbits. Since all other options are marked as N/A, they do not provide any relevant information or alternative values for comparison. Understanding this concept is crucial for grasping the behavior of electrons in quantum mechanics.

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