AIIMS2002Physics-Quantum Mechanics
AIIMS 2002 Physics de Broglie Wavelength MCQ Question
Type: MCQ-numerical-Hard-Class 12
The speed of an electron having a wavelength of 10⁻¹⁰ m is
A
7.25 × 10⁶ m/s
B
5.25 × 10⁶ m/s
C
6.26 × 10⁶ m/s
D
4.24 × 10⁶ m/s
Correct Answer
Option A
Detailed Explanation
Wavelength (λ) = 10^-10 m. Velocity of the electron, v = h/mλ = 6.6×10^-34/(9.1×10^-31)(10^-10) = 7.25×10^6 m/s.
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