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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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- Water flows through a pipe. The area of cross-section at one place A₁=10 cm²,
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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
- According to Hook’s law of elasticity, if stress is increased, the ratio of stress
- Water flows through a pipe. The area of cross-section at one place A₁=10 cm²,
- Two spherical conductors A and B of radii 1 mm and 2 mm are separated by a distance
- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- Consider a compound slab consisting of two different materials having equal thickness
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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