Physics-Bohr Model

NEET Physics Bohr Model MCQ Question

Type: MCQ-numerical-Hard-Class 12

Calculate the wavelength of the electron in the third orbit of the hydrogen atom using Bohr's quantization condition and de Broglie's hypothesis.

A

2 nm

B

0.66 nm

C

0.33 nm

D

0.2 nm

Correct Answer

Option C

Detailed Explanation

Using de Broglie's hypothesis, λ = h/mv. For the third orbit, the quantization condition gives mv = nh/2πr. Thus, λ = 2πr/n = 0.33 nm for n=3.

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