Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A velocity selector consists of electric field 
and magnetic field 
with 
. The value of 
required for electron of energy 728 eV moving along the positive 
-axis to pass undeflected is: (Given, Mass of electron 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
For lorentz force to be zero
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Physics
In a new system of units, unit of mass is , unit of length is and unit of time is . The …
Which graph can possibly represent one-dimensional motion of a particle?
Identify the incorrect statement for interference.
The equivalent capacitance between and of the combination of capacitors each having capacitance …
Which of the following arrangements of optical thin lenses will produce two images of an object pla…
Velocity-time graph of a particle of mass 5 kg moving on a straight line is as shown in figure. Wor…