Atoms and Electrons » Exercise – 1
51. Mass of a proton is :
(a) 1.67 × 10^–24 kg
(b) 1.67 × 10^–25 kg
(c) 1.67 × 10^–26 kg
(d) 1.67 × 10^–27 kg
52. The kinetic energy of a bounded electron is …….. that of an unbounded electron.
(a) Less than
(b) Twice than
(c) Greater than
(d) Same as
53. Coulomb’s law for the force between electric charges most closely resembles with :
(a) Newton’s law of motion
(b) Law of conservation of energy
(c) Gauss theorem
(d) Newtonrsquo;s law of gravitation
54. When separation between two charges is increased, the potential energy :
(a) Increases
(b) Decreases
(c) Remains constant
(d) Either a or b
55. The transferred-electron bulk effect occurs in :
(a) Germanium
(b) Gallium arsenide
(c) Silicon
(d) Metal-semiconductor junction
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