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 1471: Two similar kettles containing equal masses of boiling water are placed on a table. If the surface of one is highly polished and the surface of the other is covered with soot, Which of the following observations is correct Options:
  A) The two kettles will cool down at the same rate
  B) the polished kettle cools down more quickly by conduction
  C) the kettle covered with soot cools down more quickly because it is a good radiator
  D) the kettle covered with soot cools down more quickly by the process of heat convection
  Show Answer
  The correct answer is C .
• Question 1472: 1,000 identical drops of oil of density 500kgm^-3 have a total mass of 5 x 10^-4kg. One of the drops forms a thin film of area 0.5m² on water. The thickness of the film is Options:
  A) 2 x 10^-8m
  B) 2 x 10^-9m
  C) 2 x 10^-7m
  D) 3 x 10^-9m
  E) 2.8 x 10^-8m
  Show Answer
  The correct answer is B .
• Question 1473: A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point T. What is the total displacement? Options:
  A) 6km south
  B) 4km north
  C) 6km north
  D) 4km east
  Show Answer
  The correct answer is B .
• Question 1474: A simple pendulum has a period of 17.0s. When the length is shorten by 1.5m, its period is 8.5s. Calculate the original length of the pendulum Options:
  A) 4.0 m
  B) 3.0 m
  C) 2.0 m
  D) 1.5 m
  Show Answer
  The correct answer is C .
• Question 1475: A hot metal ball is suspended in the open air. As it cools it loses heat by Options:
  A) conduction only
  B) convection only
  C) radiation only
  D) conduction and convection
  E) convection and evaporation
  Show Answer
  The correct answer is B .
• Question 1476:
  

  Three forces with magnitudes 16 N, 12 N and 21 N are shown in the diagram below. Determine the magnitude of their resultant force and angle with the x-axis

  Options:
  A) 7.63N,61°
  B) 8.71N,61°
  C) 7.63N,29°
  D) 8.71N,29°
  Show Answer
  The correct answer is B .
• Question 1477: A wire of length 15m made of a material of resistivity 1.8 x 10^-6$\mathrm{\Omega }$m has a resistance of 0.27$\mathrm{\Omega }$. Determine the area of the wire Options:
  A) 1.5 x 10^-4m²
  B) 1.0 x 10^-4m²
  C) 2.7 x 10^-5m²
  D) 7.3 x 10^-6m²
  Show Answer
  The correct answer is B .
• Question 1478: An object is placed at 5.6 x 10^-4m in front of a converging lens of focal length 1.0 x 10^-nm. The image formed is Options:
  A) Real, Erect and magnified
  B) Virtual, erect and magnified
  C) Real, inverted and magnified
  D) Virtual, erect and diminished
  Show Answer
  The correct answer is C .
• Question 1479: Which of the following statements are true of the law of universal gravitation? Options:
  A) any two bodies attract each other with a force which is proportional to the difference of their masses
  B) any two bodies attract each other with a force which is inversely proportional to the square of the distance between them
  C) any two bodies attract each other with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them
  D) any two bodies attract each other with a force which is proportional to the square of the distance between them
  E) any two bodies attract each other with a force which is proportional to the sum of their masses
  Show Answer
  The correct answer is C .
• Question 1480: In free fall, a body of mass 1kg drops from a height of 125m from rest in 5s. How long will it take another body of mass 2kg to fall from rest from the same height? [g = 10ms^-1·] Options:
  A) 5s
  B) 10s
  C) 12s
  D) 15s
  Show Answer
  The correct answer is A .