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A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move
Options
(a) in a circular orbit
(b) along a parabolic path
(c) along a straight line
(d) in an elliptical orbit.
Correct Answer:
in a circular orbit
Explanation:
If the electric field switched off, and the same magnetic field is maintained, the electrons move in a ciruclar orbit and electron will travel a magnetic field to its velocity.
Related Questions: - Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Light emitted during the de excitation of electron from n=3 to n=2, when incident
- An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Light emitted during the de excitation of electron from n=3 to n=2, when incident
- An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object
- If alpha, beta and gamma rays carry same momentum, which has the longest
- A body projected vertically from the earth reaches a height equal to earth’s radius
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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