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 101: Two spheres of masses 5.0 kg and 10.0 kg are 0.3 m apart. Calculate the force of attraction between them?
  [G = 6.67 X 10^-11 Nm² Kg²] Options:
  A) 3.50 x 10^-10N
  B) 3.71 x 10^-8 N
  C) 3.57 x 10^-2N
  D) 4.00 x 10²N
  Show Answer
  The correct answer is B .
• Question 102: What is the inductance (L) of an inductor whose reactance is 1Ω at 50/ π hertz (H)? Options:
  A) 100 H
  B) 0.01H
  C) 10H
  D) 1H
  Show Answer
  The correct answer is B .
• Question 103:

  The equation of a wave traveling along the positive x-direction is given by; y = 0.25 x 10${}^{-3}$ sin (500t - 0.025x). Determine the angular velocityof the wave motion.

  Options:
  A) 0.25 x 10${}^{-3}$rads${}^{-1}$
  B) 0.25 x 10${}^{-1}$rads${}^{-1}$
  C) 5.00 x 10${}^2$rads${}^{-1}$
  D) 2.50 x 10${}^3$rads${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 104:

  If the stress on a wire is 10${}^7$NM${}^{-2}$ and the wire is stretched from its original length of 10.00m to 10.05m. The young'smodulus of the wire is?

  Options:
  A) 5.0 x 10${}^{-4}$Nm${}^{-2}$
  B) 5.0 x 10${}^{-5}$Nm${}^{-2}$
  C) 2.0 x 10${}^{-8}$Nm${}^{-2}$
  D) 2.0 x 10${}^9$Nm${}^{-2}$
  Show Answer
  The correct answer is D .
• Question 105:

  A man walks 1km due east and then 1 km due north. His displacement is

  Options:
  A) √2km N 45°E
  B) 1km N 30°E
  C) 1km N 15°E
  D) √2km N 60°E
  Show Answer
  The correct answer is A .
• Question 106: PHCN measures its electrical energy in Options:
  A) W
  B) KWh
  C) Wh
  D) J
  Show Answer
  The correct answer is B .
• Question 107: Gamma rays are produced when Options:
  A) high velocity electrons are abruptly stopped in metals
  B) energy changes occur within the nucleus of atoms
  C) energy changes occur within the electronic structure of atoms
  D) electrons are deflected in very strong magnetic fields
  Show Answer
  The correct answer is B .
• Question 108: A current of 0.5A flows through a resistor when connected to a 40-V battery. How much energy is dissipated in 2 minutes? Options:
  A) 1200J
  B) 1500J
  C) 2400J
  D) 96000J
  Show Answer
  The correct answer is C .
• Question 109: A travelling wave moving from left to right has an amplitude of 0.15m, a frequency of 550Hz and a wavelength of 0.01m. The equation describing the wave is Options:
  A) y = 0.15 sin 200π(x - 5.5t)
  B) y = 0.15 sin π(0.01x - 5.5t)
  C) y = 0.15 sin 5.5π(x - 200t)
  D) y = 0.15 sin π(550x - 0.01t)
  Show Answer
  The correct answer is A .
• Question 110:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .