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 1:

  The velocities of light in air and glass are 3.0 x 10${}^8$ms${}^{-1}$ and 2.0 x 10${}^8$ms${}^{-1}$ respectively. If the angle of refraction is 30º, the sine of the angle of incidence is?

  Options:
  A) 0.33
  B) 0.50
  C) 0.67
  D) 0.75
  Show Answer
  The correct answer is D .
• Question 2:

  A 2H inductor has negligible resistance and is connected to a $\frac{50}{\pi }$ Hz A.C supply. The reactance of the inductor is?

  Options:
  A) 200$\mathrm{\Omega }$
  B) 50$\mathrm{\Omega }$
  C) $\frac{100}{\pi }$
  D) $\frac{25}{\pi \mathrm{\Omega }}$
  Show Answer
  The correct answer is A .
• Question 3: A man stands in front of a tall wall and produces a sound. If he receives the echo of the sound two seconds later, calculate his distance from the wall. (The speed of sound in air is 330ms^-1) Options:
  A) 600m
  B) 400m
  C) 330m
  D) 328m
  E) 165m
  Show Answer
  The correct answer is C .
• Question 4: The charge of an alpha particle can be neutralized by Options:
  A) 1 beta particle
  B) 2 photons of gamma rays
  C) 2 beta particles
  D) 4 beta particles
  E) 4 photons of gamma rays
  Show Answer
  The correct answer is C .
• Question 5: A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10ms-2] Options:
  A) 1.00s
  B) 1.50s
  C) 2.25s
  D) 2.50s
  E) 3.00s
  Show Answer
  The correct answer is B .
• Question 6: The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 ⁶m²is?
  [Resistivity of the wire = 4 x 10^-7 Ω m] Options:
  A) 5.0 Ω
  B) 0.5 Ω
  C) 10.0 Ω
  D) 1.0 Ω
  Show Answer
  The correct answer is D .
• Question 7: Three similar cells each of e.m.f 2 v and internal resistance 2Ω are connected in parallel, the total e.m.f and total internal resistance are respectively Options:
  A) 6 v, 6.0Ω
  B) 2 v, 0.7Ω
  C) 2 v, 6.0Ω
  D) 6 v, 0.7Ω
  Show Answer
  The correct answer is B .
• Question 8: An air craft attempt too fly due north at 100 kmh^-1. If the wind blows against it from east to west at 60 kmh^-1, its resultant velocity is Options:
  A) 117 kmh^-1, N31^oE
  B) 127 kmh^-1, N31^oE
  C) 117 kmh^-1, N31^oW
  D) 127 kmh^-1, N31^oW
  Show Answer
  The correct answer is C .
• Question 9:

  I. Wavelength

  II. Medium of propagation

  III. Wave velocity

  IV. Frequency

  V. Energy

  Which of the above are used for characterizing waves?

  Options:
  A) I, II and V
  B) I and IV
  C) I, III and IV
  D) III, IV and V
  Show Answer
  The correct answer is C .
• Question 10: A block of a substance X will sink in a liquid V but float liquid Z. Which of the following statements is NOT correct about the densities of the three substances? Options:
  A) Density of liquid Z is greater than that of X
  B) Density of liquid V is less than that of liquid X
  C) Density of liquid Y is less than that of liquid Z
  D) Liquid Z has the greatest density of all the three substances.
  E) If liquids Y and Z do not mix, liquid Z will float on liquid Y.
  Show Answer
  The correct answer is E .