Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If waves travelling at same speeds, which of the following matter waves have the shortest wavelength?
A
Electron
B
Alpha particle ( 
C
Neutron
D
Proton
Text Solution
Verified by ExpertsThe correct answer is:
B
From the de-Broglie equation, wavelength, 
For same speed of different particles, i.e., electron, proton, neutron and 
-particle,
, (As h is constant). Greater the mass of matter waves, lesser is wavelength and vice-versa. In these matter waves, alpha particle ( 
) has higher mass, therefore, shortest wavelength.
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