Physics MCQs for NTS Test

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36. An element is identified by the number of _____ in its _____.
(A) protons, nucleus
(B) neutrons, nucleus
(C) electrons, atom
(D) positrons, atom

37. The attractive force that binds protons and neutrons in nucleus of an atom is known as
(A) Coulomb force
(B) electromagnetic force
(C) nuclear force
(D) electromotive force

38. The speed of light in air is
(A) 2.8×106 m/s
(B) 2.8×108 m/s
(C) 3.0×106 m/s
(D) 3.0×108 m/s

39. The speed of light in water is
(A) 2.26×106 m/s
(B) 2.26×108 m/s
(C) 2.86×106 m/s
(D) 2.86×108 m/s

40. Which device is often used to smooth out the sudden variations in line voltage?
(A) Breaker
(B) Capacitor
(C) Resistor
(D) Switch

ANSWERS: PHYSICS MCQS FOR NTS TEST
36. (A) protons, nucleus
37. (C) nuclear force
38. (D) 3.0×108 m/s
39. (B) 2.26×108 m/s
40. (B) Capacitor