Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 1081: The thermometric properties of a thermocouple is the change in? Options:
  A) equivalent resistance
  B) electromotive force
  C) colour
  D) pressure
  Show Answer
  The correct answer is B .
• Question 1082: An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance? Options:
  A) 10 cm
  B) 25 cm
  C) 16 cm
  D) 14 cm
  Show Answer
  The correct answer is A .
• Question 1083: If a water pump at Kainji Dam is capable of lifting 1000kg of water through a vertical height of 10m in 10s, the power of the pump is [g = 10ms^-2] Options:
  A) 1.0kW
  B) 10.0kW
  C) 12.5kW
  D) 15.0kW
  E) 20.0kW
  Show Answer
  The correct answer is B .
• Question 1084: The equation P^xV^yT^z = constant Options:
  A) x = 0, y = 0, z = 1
  B) x = 1, y = 0, z = 0
  C) x = 1, y = 1, z = 0
  D) x = 1, y = 1, z = 1
  E) x = 1, y = 1, z = -1
  Show Answer
  The correct answer is E .
• Question 1085: An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is? Options:
  A) 9 A
  B) 8 A
  C) 6 A
  D) 7 A
  Show Answer
  The correct answer is B .
• Question 1086: Which of the following types of motion are oscillatory? i.a diving board when used by a diver. ii. the motion of the balance wheel of a wrist watch. iii. the motion of the turn-table of a record player. iv. the motion of the center of a ten kobo piece as it rolls down an inclined plane. v. the motion of the needle of a D.C. ammeter into which a low A.C. current is passed Options:
  A) i and ii
  B) i, ii and iii
  C) ii, ii and iv
  D) i, ii and v
  E) iii, iv and iv
  Show Answer
  The correct answer is A .
• Question 1087: The maximum power transfer occur in a cell when the external resistance is Options:
  A) Twice the internal resistance of the cell
  B) The same as the internal resistance of the cell
  C) Greater than the internal resistance of the cell
  D) Less than the internal resistance of the cell
  Show Answer
  The correct answer is B .
• Question 1088: If the pressure on 100cm³ of an ideal gas is doubled while its kelvin temperature is halved, then the new volume of the gas will become Options:
  A) 25cm³
  B) 50cm³
  C) 100cm³
  D) 200cm³
  E) 400cm³
  Show Answer
  The correct answer is A .
• Question 1089: A pilot records the atmospheric pressure outside its plane as 63cm of Hg while a ground observer records a reading of 75cm of Hg for the atmospheric pressure on the ground. Assuming that the density of the atmosphere is constant, calculate the height of the plane above the ground. (Relative density of Hg = 13.0 and that of air = 0.00013) Options:
  A) 1200m
  B) 6300m
  C) 7500m
  D) 13800m
  Show Answer
  The correct answer is A .
• Question 1090: When a charge moves through an electric circuit in the direction of an electric force, it Options:
  A) gains both potential and kinetic energy
  B) gains potential energy and lose kinetic energy
  C) loses potential energy and gains kinetic energy
  D) loses both potential and kinetic energy
  Show Answer
  The correct answer is A .