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 1921: Mercury is suitable as a barometric fluid because it Options:
  A) expands uniformly
  B) is opaque
  C) is several times denser than water
  D) is a good conductor of heat
  Show Answer
  The correct answer is C .
• Question 1922: If the distance between two stationary charged particle is doubled, the magnitude of the electro-static force between them will be Options:
  A) doubled
  B) halved
  C) a quarter of its former value
  D) unchanged
  E) four times the original value
  Show Answer
  The correct answer is C .
• Question 1923: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{30}X$
  B) ${}_{30}^{28}X$
  C) ${}_{30}^{58}X$
  D) ${}_{28}^{58}X$
  Show Answer
  The correct answer is D .
• Question 1924:

  

  When one arm of a U-tube manometer is connected to a gas supply, the levels of mercury in the two arms of the U-tube is shown in the figure above, if the atmospheric pressure is 76.0cm hg, the gas pressure is

  Options:
  A) 62.6cm hg
  B) 72.5cm hg
  C) 79.5cm hg
  D) 85.9cm hg
  Show Answer
  The correct answer is D .
• Question 1925: In an experiment to determine terminal velocity, as the pressure increases, the viscosity off a liquid Options:
  A) increases
  B) decreases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is D .
• Question 1926: A gas at pressure PN-m^-2 and temperature 27^oC is heated to 77^oC at constant volume. The new pressure is Options:
  A) 0.85 PN-m^-2
  B) 0.86 PN-m^-2
  C) 1.16 PN-m^-2
  D) 1.18 PN-m^-2
  E) 2.85 PN-m^-2
  Show Answer
  The correct answer is C .
• Question 1927:

  The earth's gravitational field intensity at its surface is about

  (G = 6.7 × 10${}^{-11}$Nm${}^2$/kg${}^2$, mass of the earth is 6 × 10${}^{24}$kg, radius of the earth is 6.4 × 10${}^6$m, g on the earth = 9.8m/s${}^2$)

  Options:
  A) 6.7N/kg
  B) 7.9N/kg
  C) 8.0N/kg
  D) 9.8N/kg
  Show Answer
  The correct answer is D .
• Question 1928: In the study of physics, temperature and heat are often confused with each other. Which of the following statements correctly defines these two element? Options:
  A) temperature is a measure of the average kinetic energy of the molecules of a substance
  B) heat is a measure of the total kinetic energy of the molecules in a system
  C) different materials require different amounts of heat to cause a given change in temperature
  D) all of the above
  E) A and B only
  Show Answer
  The correct answer is D .
• Question 1929: Two points on a velocity time-graph have coordinates (5s, 10ms^-1) and (20s, 20ms^-1). Calculate the mean acceleration between the two points Options:
  A) 0.67ms^-1
  B) 0.83ms^-1
  C) 1.50ms^-1
  D) 2.00ms^-1
  Show Answer
  The correct answer is A .
• Question 1930: Satellite communication network makes use of? Options:
  A) visible light
  B) sound wave
  C) radio wave
  D) infra-red wave
  Show Answer
  The correct answer is C .