Physics-de Broglie Wavelength
NEET Physics de Broglie Wavelength MCQ Question
Type: MCQ-numerical-Medium-Class 12
What is the de Broglie wavelength of a neutron moving with a speed of 2.0 x 10^3 m/s? (Mass of neutron = 1.675 x 10^-27 kg, Planck's constant h = 6.626 x 10^-34 J s)
A
98 x 10^-10 m
B
76 x 10^-34 m
C
96 x 10^-14 m
D
92 x 10^-24 m
Correct Answer
Option A
Detailed Explanation
Using the de Broglie wavelength formula λ = h/p, where p = mv = 1.675 x 10^-27 kg * 2.0 x 10^3 m/s, we calculate λ ≈ 1.98 x 10^-10 m.
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