Physics-de Broglie Wavelength
NEET Physics de Broglie Wavelength MCQ Question
Type: MCQ-numerical-Hard-Class 12
Calculate the de Broglie wavelength of a proton moving with a velocity of 2.0 × 10^5 m/s. (Mass of proton = 1.67 × 10^-27 kg, Planck's constant h = 6.63 × 10^-34 J s)
A
98 × 10^-12 m
B
32 × 10^-13 m
C
48 × 10^-14 m
D
92 × 10^-15 m
Correct Answer
Option B
Detailed Explanation
Using the de Broglie formula λ = h/p, where p = mv, the wavelength is computed as λ = 6.63 × 10^-34 J s / (1.67 × 10^-27 kg × 2.0 × 10^5 m/s) = 3.32 × 10^-13 m, illustrating the wave nature of particles.
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