NEET2025Physics-Wave-Particle Duality
NEET 2025 Physics de Broglie Wavelength MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A photon and an electron (mass m) have the same energy E. The ratio (λ_photon/λ_electron) of their de Broglie wavelengths is: (c is the speed of light)
A
√(E/2m)
B
c√(2mE)
C
c√(2m/E)
D
1/c√(E/2m)
Correct Answer
Option C
Detailed Explanation
For a photon, λ_photon = hc/E. For an electron, λ_electron = h/√(2mE). The ratio λ_photon/λ_electron = c√(2m/E).
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