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 71:

  A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1, determine the work one by the friction. [g = 10ms²]

  Options:
  A) 2 $\times$ 10^-4
  B) 2 $\times$ 10^-3
  C) 2 $\times$ 10¹
  D) 2 $\times$ 10²
  Show Answer
  The correct answer is B .
• Question 72: Which of the following phenomena explains the formation of a mirage? i. Reflection ii. Refraction iii. Diffraction Options:
  A) i and ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii only
  Show Answer
  The correct answer is A .
• Question 73: A particle moves in a circular orbit of radius 0.02m. If the speed of the particle is 0.88ms^-1, calculate its frequency in cycles per second Options:
  A) 2.0Hz
  B) 7.0Hz
  C) 8.8Hz
  D) 14.0Hz
  E) 17.6Hz
  Show Answer
  The correct answer is B .
• Question 74: If a sound wave goes from a cold air region to a hot air region, its wavelength will Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is B .
• Question 75: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 76: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 77: The resistance in a series R-C circuit is 5 Ω. If the impedance of the circuit is 13 Ω, calculate the reactance of the capacitor Options:
  A) 65 Ω
  B) 18 Ω
  C) 16 Ω
  D) 14 Ω
  E) 12 Ω
  Show Answer
  The correct answer is E .
• Question 78: A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode? Options:
  A) 2m
  B) 4m
  C) 1m
  D) 3m
  Show Answer
  The correct answer is C .
• Question 79: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .
• Question 80: The following are derived units EXCEPT Options:
  A) kg m^-3
  B) N
  C) Ns
  D) m³
  E) kg
  Show Answer
  The correct answer is E .