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 101: An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340ms^-1 Options:
  A) 106Hz
  B) 213Hz
  C) 318Hz
  D) 425Hz
  Show Answer
  The correct answer is A .
• Question 102: A simple pendulum with a period of 2.0s has its length doubled. Its new period is Options:
  A) 1.00s
  B) 1.41s
  C) 0.3s
  D) 2.83s
  E) 4.00s
  Show Answer
  The correct answer is D .
• Question 103: When temperature of a liquid increases, its surface tension Options:
  A) Decreases
  B) Increases
  C) Remain Constant
  D) Increases then decreases
  Show Answer
  The correct answer is A .
• Question 104:

  The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air.

  Options:
  A) 3.33%
  B) 5.55%
  C) 33.33%
  D) 55.55%
  Show Answer
  The correct answer is C .
• Question 105: If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope Options:
  A) 2
  B) 3
  C) 11
  D) 28
  Show Answer
  The correct answer is D .
• Question 106: Which of the following statements is correct? The magnetized state of an iron bar can be destroyed completely by Options:
  A) heating the bar to a high temperature
  B) breaking the bar
  C) connecting opposite poles with a small piece of iron
  D) placing the bar inside a strong magnetic field
  E) none of the above
  Show Answer
  The correct answer is A .
• Question 107: The force responsible for holding the moon in its orbit around the earth against the gravitational pull of the earth is Options:
  A) centrifugal
  B) rotational
  C) reaction
  D) centripetal
  E) tractional
  Show Answer
  The correct answer is D .
• Question 108: An object of mass 50kg is released from a height of 2m.Find the kinetic energy just before it strikes the ground Options:
  A) 250J
  B) 1000J
  C) 10 000J
  D) 100 000J
  Show Answer
  The correct answer is B .
• Question 109: Which of the following cells does not require a dipolar for effective and efficient delivery of current? Options:
  A) Daniel cell
  B) Dry Leclanche cell
  C) Nickel-iron accumulator
  D) Voltaic cell
  E) Wet Leclanche cell
  Show Answer
  The correct answer is C .
• Question 110: A resistor connected in parallel with a galvanometer so that a large amount of current can be measured is called a/an Options:
  A) ammeter
  B) avometer
  C) coil resistor
  D) multiplier
  E) shunt.
  Show Answer
  The correct answer is E .