Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A particle having electric charge 
and mass 
is accelerated by applying an electric potential of 1.21 V. Wavelength of the matter wave associated with the particle is 
. The value of 
is 
(Take Planck's constant 
)
Text Solution
Verified by ExpertsThe correct answer is:
10
(10)
The de Broglie wavelength is 
where 
is found from energy conservation.
From 
.
Therefore: 
.
Thus 
.
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