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 1001: An air bubble of volume 2 cm* is formed 20 m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10 m of water? Options:
  A) 6cm³
  B) 4cm³
  C) 3cm³
  D) 2cm³
  E) 1cm³
  Show Answer
  The correct answer is B .
• Question 1002: In an A.C circuit, the ratio of r.m.s value to peak value of current is Options:
  A) 2
  B) $\frac{1}{2}$
  C) $\frac{1}{\sqrt{2}}$
  D) $\sqrt{2}$
  Show Answer
  The correct answer is C .
• Question 1003: A clinical thermometer is different from other mercury in glass thermometers owing to Options:
  A) the constriction on its stem
  B) the grade of mercury used in it
  C) its long stem
  D) its wide range of temperatures
  Show Answer
  The correct answer is A .
• Question 1004: In the electrical method of making a magnet, the polar the magnet formed depends on the Options:
  A) amount of current passed
  B) direction of the current
  C) nature of the material used
  D) orientation of the magnetic material in space
  E) size of the magnetic material
  Show Answer
  The correct answer is B .
• Question 1005: Three cells each of e.m.f. 1.5v and an internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across a load resistance of 2.67$\mathrm{\Omega }$. Calculate the current in the load? Options:
  A) 0.26A
  B) 0.41A
  C) 0.50A
  D) 0.79A
  Show Answer
  The correct answer is C .
• Question 1006: The areas of the effort and load pistons of a hydraulic press are 0.5m² and 5m² respectively. If a force F₁ of 100N is applied on the effort piston, the force F₂ on the load is Options:
  A) 10N
  B) 100N
  C) 500N
  D) 1000N
  E) 5000N
  Show Answer
  The correct answer is D .
• Question 1007:

  A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil. If the input voltage is 100 volts, the output voltage is

  Options:
  A) 5 volts
  B) 10 volts
  C) 15 volts
  D) 20 volts
  Show Answer
  The correct answer is B .
• Question 1008:

  

  If the system above is in equilibrium, the tension in the string Q is

  Options:
  A) 11N
  B) 9N
  C) 4N
  D) 6N
  Show Answer
  The correct answer is B .
• Question 1009:

  The velocity y of a particle in a time t is given by the equation

  Y = 10 + 2t²

  Find the instantaneous acceleration after 5 seconds

  Options:
  A) 60 ms^-2
  B) 20 ms^-2
  C) 15 ms^-2
  D) 10 ms^-2
  Show Answer
  The correct answer is B .
• Question 1010:

  The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20º and 80ºC respectively is?

  Options:
  A) 3.0 x 10${}^2$km${}^{-1}$
  B) 3.0 x 10${}^3$km${}^{-1}$
  C) 5.0 x 10${}^3$km${}^{-1}$
  D) 3.0 x 10${}^4$km${}^{-1}$
  Show Answer
  The correct answer is B .