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 591: If a given mass at constant pressure obeys the relation...volume is proportional to the absolute temperature...the gas is said to obey Options:
  A) Hooke's Law
  B) Boyle's Law
  C) Dalton's Law
  D) Charles' Law
  E) Newton's Law
  Show Answer
  The correct answer is D .
• Question 592: Light of energy 5eV falls on a metal of work function 3eV and electrons are liberated. The stopping potential is Options:
  A) 1.7V
  B) 2.0V
  C) 8.0V
  D) 15.0V
  Show Answer
  The correct answer is B .
• Question 593: In an electrolysis experiment, a cathode of mass 5g is found o weigh 5.01g after a current of 5A flows for 50 seconds. What is the electrochemical equivalent of the deposited substance? Options:
  A) 0.00004g/C
  B) 0.00002g/C
  C) 0.02500g/C
  D) 0.05000g/C
  E) 0.00001g/C
  Show Answer
  The correct answer is A .
• Question 594: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 595:

  Which of the following statements are correct of the production and propagation of waves?

  I. vibration produces waves

  II. waves transmit energy along the medium

  III. the medium through which the wave travels does not travel with the wave

  IV. waves do not require any medium for transmission

  Options:
  A) I and IV only
  B) II and IV only
  C) III and IV only
  D) I, II and III only
  Show Answer
  The correct answer is D .
• Question 596: N.N.P.C. gas cylinder containing 15kg of cooking gas was left open, and the gas emptied in 3.8 minutes, at an average speed of 20 ms^-1. What force was exerted on the gas in the cylinder? Options:
  A) 132N
  B) 13.2N
  C) 1.32N
  D) 0.132N
  E) 0.013N
  Show Answer
  The correct answer is C .
• Question 597:

  A wire of radius 0.2 mm is extended by 0.5% of its length when supported by a load of 1.5 kg. Determine the Young's modulus for the material of the wire.

  [Take g = 10 ms${}^{-2}$]

  Options:
  A) $2.4\times {10}^{10}(N{m}^{-2})$
  B) $1.5\times {10}^{10}(N{m}^{-2})$
  C) $2.4\times {10}^9(N{m}^{-2})$
  D) $1.3\times {10}^{10}(N{m}^{-2})$
  Show Answer
  The correct answer is A .
• Question 598: A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P? Options:
  A) 1500N
  B) 500N
  C) 4166N
  D) 750N
  Show Answer
  The correct answer is A .
• Question 599: One of the features of the fission process is that Options:
  A) its products are not radioactive
  B) it leads to chain reaction
  C) neutrons are not released
  D) the sum of the masses of the reactants equals the sum of masses of the products
  Show Answer
  The correct answer is B .
• Question 600: The quantity of heat needed to raise the temperature of a body by 1K is the body's Options:
  A) Heat capacity
  B) Internal energy
  C) Specific heat capacity
  D) Latent heat of fusion
  Show Answer
  The correct answer is A .