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The mean free path of electrons in a metal is 4 x 10⁻⁸ m. The electric field which can give on an average 2 eV energy to an electron in the metal will be in units of V/m
Options
(a) 5 x 10⁻¹¹
(b) 8 x 10⁻¹¹
(c) 5 x 10⁷
(d) 8 x 10⁷
Correct Answer:
5 x 10⁷
Explanation:
E = V / d = 2 / 4 x 10⁻⁸
0.5 x 10⁸ = 5 x 10⁷ Vm⁻¹
Related Questions: - When germanium is doped with phosphorus what type of semiconductor is produced?
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When germanium is doped with phosphorus what type of semiconductor is produced?
- A horizontal straight conductor kept in north-south direction falls under gravity. Then
- A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- The transverse nature of electromagnetic waves is proved by which of the following?
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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