NEET2016Physics-Quantum Mechanics
NEET 2016 Physics de-Broglie Wavelength MCQ Question
Type: MCQ-conceptual-Medium-Class 12
An electron of mass m and a photon have same energy E. The ratio of de-Broglie wavelengths associated with them is (c being velocity of light)
A
c(2mE)¹/²
B
c (2m/E)¹/²
C
1/c (E/2m)¹/²
D
E (1/2m)¹/²
Correct Answer
Option C
Detailed Explanation
The de-Broglie wavelength is given by λ = h/p. For an electron, p = √(2mE), and for a photon, p = E/c. The ratio is derived from these expressions.
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