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 1591: The total energy required to send a unit positive charge round a complete electrical circuit is the Options:
  A) kinetic energy
  B) potential difference
  C) electromotive force
  D) electrical energy
  Show Answer
  The correct answer is B .
• Question 1592: 2 kg of water is heated with a heating coil which draws 3.5 A from a 200 V mains for 2 minutes. what is the increase in temperature of the water?
  [specific heat capacity of water = 4200 jkg ^-1k^-1] Options:
  A) 30°
  B) 25°
  C) 15°
  D) 10°
  Show Answer
  The correct answer is D .
• Question 1593:

  Which of the units of the following physical quantities are derived?

  I. Area
  II. Thrust
  III. Pressure
  IV. Mass

  Options:
  A) I, II, III and IV
  B) I, II, and III only
  C) I, II, and IV only
  D) I and IV only
  Show Answer
  The correct answer is B .
• Question 1594:

  A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

  Options:
  A) 4mm
  B) 2mm
  C) 0.25mm
  D) 0.12mm
  Show Answer
  The correct answer is B .
• Question 1595:

  

  In the figure above W1 = 200g, and W2 =450g . Calculate the extension of the spring per unit load? [g = 10ms^-2]

  Options:
  A) 6.0 x 10^-5mN^-1
  B) 2.5 x 10^-4mN^-1
  C) 6.0 x 10 ^-3mN^-1
  D) 2.5 x 10 ^-2mN^-1
  Show Answer
  The correct answer is C .
• Question 1596:

  

  In the diagram above, the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static friction between the mass m1 and the table is

  Options:
  A) m1/m2
  B) m1g/m2
  C) m2/m1
  D) m2g/m1
  Show Answer
  The correct answer is C .
• Question 1597: 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 1598: If the fraction of the atoms of a radioactive material left after 120years is 1/64, what is the half-life of the material? Options:
  A) 24 years
  B) 20 years
  C) 10 years
  D) 2 years
  Show Answer
  The correct answer is B .
• Question 1599: What happens when a gas expands at constant temperature? Options:
  A) its pressure decreases
  B) the total momentum of its molecules remains constant
  C) its pressure decreases and the total momentum of its moleculees remains constant
  D) its pressure decreses and the total kinetic energy of its molecule decreases
  Show Answer
  The correct answer is A .
• Question 1600: The direction of the path taken by light is called Options:
  A) Locus
  B) Lines
  C) Ray
  D) Beam
  Show Answer
  The correct answer is C .