STANDARDPhysics-Modern Physics
STANDARD Physics de-Broglie Wavelength MCQ Question
Type: MCQ-conceptual-Medium
If the radius of first orbit of H-atom is a₀, then de-Broglie wavelength of electron in 4th orbit is
A
8πa₀
B
a₀/4
C
16a₀
D
2πa₀
Correct Answer
Option A
Detailed Explanation
The radius of the nth orbit is given by rₙ = a₀n². For the 4th orbit, r₄ = 16a₀. The de-Broglie wavelength λ = h/mv = h/8πa₀, which simplifies to 8πa₀.
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