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 1211: The force of repulsion between two point positive charges 5$\mu$C and 8$\mu$C separated at a distance of 0.02 map art is. [$\frac{1}{4\pi {\epsilon }_o}$ = 9 x 10⁹Nm²C^-2] Options:
  A) 1.8 x 10^-10N
  B) 9.0 x 10^-8N
  C) 9.0 x 10²N
  D) 4.5 x 10³N
  Show Answer
  The correct answer is C .
• Question 1212:

  

  In the circuit above, The potential across each capacitor is 100V. The total energy stored in the two capacitors is

  Options:
  A) 3.0 x 10⁴J
  B) 3.0 x 10²J
  C) 2.5 x 10^-2J
  D) 6.0 x 10^-3J
  Show Answer
  The correct answer is C .
• Question 1213: A blacksmith heated a metal whose cubic expansivity is 6.3 x 10^-6K^-1. The areal expansivity is Options:
  A) 2.0 x 10^-6K^-1
  B) 2.1 x 10^-6K^-1
  C) 4.2 x 10^-6K^-1
  D) 6.3 x 10^-6K^-1
  Show Answer
  The correct answer is C .
• Question 1214:

  A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium horizontally [g = 10ms^-2]

  Options:
  A) 68N
  B) 28N
  C) 17N
  D) 7N
  Show Answer
  The correct answer is C .
• Question 1215: A quantity of gas occupies a certain volume when the temperature is -73^oC and the pressure is 1.5 atmospheres. If the pressure is increased to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas? Options:
  A) 573^oC
  B) 327^oC
  C) 300^oC
  D) 110^oC
  E) 27^oC
  Show Answer
  The correct answer is E .
• Question 1216:

  

  The diagram above shows a velocity time graph representing the motion of a car. Find the total distance covered during the acceleration and retardation of the motion

  Options:
  A) 75m
  B) 150m
  C) 300m
  D) 375m
  Show Answer
  The correct answer is A .
• Question 1217: An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is Options:
  A) 7.2kg
  B) 33.2kg
  C) 43.2kg
  D) 53.2kg
  Show Answer
  The correct answer is D .
• Question 1218: The force on a charge moving with velocity v in a magnetic field B is half of the maximum force when the angle between v and B is Options:
  A) 90^o
  B) 45^o
  C) 30^o
  D) 0^o
  Show Answer
  The correct answer is C .
• Question 1219:

  Which of the following is NOT a limitation of experimental measurements?

  Options:
  A) Systematic error
  B) Instrument resolution
  C) Random errors
  D) Human error
  Show Answer
  The correct answer is B .
• Question 1220: The function of the system of granulated carbon mixed with manganese (IV) oxide in a Letanche cell is to Options:
  A) increase the e.m.f. of the cell to 2.0V
  B) prevent local action in the cell
  C) prevent polarisation in the cell
  D) make the cell black and hence a good radiator
  Show Answer
  The correct answer is C .