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 1071:

  A cone is in unstable equilibrium has its potential energy

  Options:
  A) decreased
  B) increased
  C) unchanged
  D) oscillating
  Show Answer
  The correct answer is A .
• Question 1072: Which of the following statements is (are) NOT correct? i. pressure changes do not affect the speed of sound in air ii. the velocity of sound increases with temperature iii. the quality of the note depends only on its frequency Options:
  A) i only
  B) ii only
  C) iii only
  D) i and iii
  E) ii and iii
  Show Answer
  The correct answer is D .
• Question 1073:

  Which of the following is not a vector quantity?

  Options:
  A) momentum
  B) force
  C) temperature
  D) displacement
  Show Answer
  The correct answer is C .
• Question 1074: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 1075: The small droplet of water that forms on the grass in the early hours of the morning is Options:
  A) hail
  B) dew
  C) fog
  D) mist
  Show Answer
  The correct answer is B .
• Question 1076: The temperature at which the water vapour present in the air saturates the air and begins to condense is known as Options:
  A) boiling point
  B) melting point
  C) triple point
  D) dew point
  E) critical temperature
  Show Answer
  The correct answer is D .
• Question 1077: An electric generator has e.m.f. of 240 V and an internal resistance of 1Ω if the current supplied by the generatoris 20A when the terminal voltage is 220 V, find the ratio of the power supplied to the power dissipated? Options:
  A) 11:1
  B) 1:11
  C) 12:11
  D) 11:12
  Show Answer
  The correct answer is C .
• Question 1078:

  50cm³ of air at a pressure of 5Nm^-2 is enclosed in a metal tube by a piston. If the piston is pushed in a distance of 10cm, what will the pressure of the air become, if the cross-sectional area of the tube is 2cm^-2? (Assume that the temperature remains constant throughout)

  Options:
  A) 12.5 Nm^-2
  B) 8.7 Nm^-2
  C) 8.3 Nm^-2
  D) 3.8Nm^-2
  E) 3.0Nm^-2
  Show Answer
  The correct answer is C .
• Question 1079: Inertia is the property of a body which makes the body to Options:
  A) accelerate
  B) be reluctant to move when at rest
  C) experience friction when moving
  D) move randomly
  E) retard
  Show Answer
  The correct answer is B .
• Question 1080: A lamp is rated 240V 60W, calculate the resistance of its filament Options:
  A) 240$\mathrm{\Omega }$
  B) 360$\mathrm{\Omega }$
  C) 960$\mathrm{\Omega }$
  D) 1440$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .