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Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the number of electrons missing from each ion will be ( e being the charge of an electron)
Options
(a) 4π?￢ﾂﾀFd² / e²
(b) √(4π?￢ﾂﾀFe² / d²)
(c) √(4π?￢ﾂﾀFd² / e²)
(d) 4π?￢ﾂﾀFd² / q²
Correct Answer:
√(4π?￢ﾂﾀFd² / e²)
Explanation:
Let ne be the no. of electrons missing.
F = 1 / 4π?￢ﾂﾀ . q² / d²
q = √(4π?￢ﾂﾀd²F) = ne
n = √(4π?￢ﾂﾀFd² / e²)
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The resistance of an ammeter is 13Ω and its scale is graduated for a current
- The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
- Four identical cells of emf Ԑ and internal resistance r are to be connected in series.
- The ratio of amplitude of magnetic field to the amplitude of electric field for
- Two waves of same amplitude superpose. The resultant intensity is I₁
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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