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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.
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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
- By sucking through a straw, a student can reduce the pressure of his lungs
- The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio
- The half-life of a radioactive substance is 30 min. The time (in minutes) taken
- Two bulbs 40 watt and 60 watt and rated voltage 240 V are connected in series
- The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
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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