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 771: A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked Options:
  A) $32m{s}^{-1}$
  B) $50m{s}^{-1}$
  C) $64m{s}^{-1}$
  D) $100m{s}^{-1}$
  Show Answer
  The correct answer is D .
• Question 772: The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40hz and 180Hz? Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 773:

  A quantity of ice at -10°C is heated until the temperature of the heating vessel is 90°C. Which of the following constants is NOT required to determine the quantity of heat supplied to the vessel?

  Options:
  A) Specific latent heat of vaporization
  B) Specific heat capacity of ice
  C) Specific latent heat of fusion
  D) Specific heat capacity of water
  Show Answer
  The correct answer is A .
• Question 774: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 775:

  In a thermonuclear reaction, the total initial mass is 5.02 x 10^-27kg and the total final mass is 0.01 x 10^-27kg. The energy released in the process is

  [c = 3.0 x 10⁸ms^-1]

  Options:
  A) 9.0 x 10^-13J
  B) 9.0 x 10^-12J
  C) 9.0 x 10^-11J
  D) 9.0 x 10^-10J
  Show Answer
  The correct answer is A .
• Question 776: What is the angular velocity of an object in a horizontal circular path of radius 1.5m with a constant speed of 12ms^-1? Options:
  A) 1.6 rads^-1
  B) 4.0 rads^-1
  C) 8.0 rads^-1
  D) 16.0rads^-1
  E) 32.0 rads^-1
  Show Answer
  The correct answer is C .
• Question 777:

  I. It retains its magnetic much longer than steel.
  II. It is more easily magnetized than steel.
  III. It is more easily demagnetized than steel.
  IV. It produces a stronger magnet than steel.

  Which combination of the above makes iron preferable to steel in the making of electromagnets?

  Options:
  A) I and II only
  B) II and III only
  C) I, III, and IV only
  D) II, III and IV only
  Show Answer
  The correct answer is B .
• Question 778: The volume of a given mass of gas is 40cm³ at 27° C. What is its volume at 90° C if its pressure remains constant? Options:
  A) 32.84cm³
  B) 40.02cm³
  C) 48.40cm³
  D) 57.44cm³
  E) 72.84cm³
  Show Answer
  The correct answer is C .
• Question 779:

  A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound

  Options:
  A) 312.0 ms${}^{-1}$
  B) 110.0 ms${}^{-1}$
  C) 343.2 ms${}^{-1}$
  D) 686.4 ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 780: What is the equivalent of 20K in Celsius scale? Options:
  A) 20^oC
  B) 293^oC
  C) 68^oC
  D) 36^oC
  Show Answer
  The correct answer is B .