An electron and a proton enter region of uniform magnetic field in a direction at right angles to the field with the same kinetic energy. They describe circular paths of radius 
and 
respectively. Then
A
B
C
D
may be less than or greater than 
depending on the direction of the magnetic field
Text Solution
Verified by ExpertsThe correct answer is:
B
Here kinetic energy K and B are same.
Since m e < m p , therefore r e < r p
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