An α-particle of mass and charge
is situated in a uniform electric field of
. The velocity of the particle at the end of
path when it starts from rest is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Here, mass of α-particle
Charge of α-particle
Electric field
Force on α-particle in a uniform electric field E is
Acceleration of the α-particle is
Given :
or
According to work energy theorem,
or or
.
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