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: Emission spectra are caused by Options:
  A) kinetic energy of moving atoms
  B) potential energy of an electron in an atom
  C) transition of an electron from a higher energy level to a lower energy level
  D) transition of an electron from a lower energy level to higher energy level
  E) transition of excited protons in the nucleus.
  Show Answer
  The correct answer is C .
• Question 2:

  

  In the diagram above, which of the following velocity-time graphs shows uniform acceleration of a body from rest?

  Options:
  A) C
  B) D
  C) B
  D) A
  Show Answer
  The correct answer is C .
• Question 3: A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms^-1 from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is(take g = 10ms^-2) Options:
  A) 5 J
  B) 10 J
  C) 15 J
  D) 20 J
  Show Answer
  The correct answer is C .
• Question 4: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 5:

  A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

  Options:
  A) 4mm
  B) 2mm
  C) 0.25mm
  D) 0.12mm
  Show Answer
  The correct answer is B .
• Question 6: As a result of air at the top of a barometer, the height of the mercury column is 73.5cm when it should be 75.0cm; the volume of the space above the mercury is 8.0cm³. Calculate the correct barometer height when the barometer reads 74.0cm and the volume of the space above the mercury is 6.0cm³. Options:
  A) 72.0cm
  B) 74.5cm
  C) 75.1cm
  D) 76.0cm
  Show Answer
  The correct answer is D .
• Question 7: The ground is always cold at night because the Options:
  A) atmosphere absorbs the sun's energy at night
  B) earth radiates heat to the atmosphere at night
  C) sun no longer shine at night
  D) atmosphere reflects the sun's energy at night
  Show Answer
  The correct answer is B .
• Question 8: 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 9: 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 10:

  

  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 .