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 2021: The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms^-1 the depth of the sea is Options:
  A) 6000m
  B) 3000m
  C) 1500m
  D) 375m
  Show Answer
  The correct answer is B .
• Question 2022: The unit of moment of a couple can be expressed in? Options:
  A) N m^-1
  B) N m^-2
  C) N m
  D) N m²
  Show Answer
  The correct answer is C .
• Question 2023:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 2024: When an athlete perspires after running, he loses heat through Options:
  A) Evaporation
  B) Conduction
  C) Radiation
  D) Convection
  Show Answer
  The correct answer is A .
• Question 2025:

  If a source of solid is moving, a stationary listener will hear a sound of different frequency. This is called?

  Options:
  A) doppler effect
  B) resonance
  C) ultra sound
  D) rarefaction
  Show Answer
  The correct answer is A .
• Question 2026:

  A coil X is moved quickly away from the end Y of a stationary metal bar and a current then flows in X as shown above.

  Then

  Options:
  A) the bar is not a magnet
  B) Y is a north pole
  C) Y is a South pole
  D) Y repels coil X
  Show Answer
  The correct answer is B .
• Question 2027: Calculate the amount of heat required to convert 2kg of ice at 2^oC to water at 0^oC. [specific heat capacity of ice = 2090Jkg^-1oC^-1, specific latent heat of fusion of ice = 333kJkg^-1] Options:
  A) 666J
  B) 8360J
  C) 666 000J
  D) 674 360J
  Show Answer
  The correct answer is D .
• Question 2028: Which of the following is a property of steel? Options:
  A) it cannot retain its magnetism longer than iron
  B) it can be used for making temporary magnets
  C) it can be used for making permanent magnets
  D) it can easily be magnetized and demagnetized
  Show Answer
  The correct answer is C .
• Question 2029: One of the most important applications of bi-metallic strip is found in the construction of Options:
  A) a thermostat
  B) an altimeter
  C) a thermocouple
  D) a hydrometer
  Show Answer
  The correct answer is A .
• Question 2030: Heat losses to the surrounding is possible through the following except Options:
  A) Conduction
  B) Convection
  C) Radiation
  D) Expansion
  Show Answer
  The correct answer is D .