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 111: Which of the following statements are NOT correct? Options:
  A) boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
  B) both the boiling point and the saturated vapour pressure of a given liquid depends on the external pressure
  C) the saturated vapour presssure rises with increase in temperature
  D) the saturated vapour pressure is independent of the volume available for the vapour
  E) it is possible to boil water at a lower temperature than 100^oC at high altitude
  Show Answer
  The correct answer is E .
• Question 112: A closed coil of wire is placed near a magnet. The magnet lies along the axis of the coil. Under which of the following conditions would there be no current in the coil? Options:
  A) When the coil is moved toward the stationary magnet
  B) When the coil is moved away from the stationary magnet
  C) when the coil is held stationary but the magnet is moved towards the coil
  D) when both the coil and the magnet are held stationary
  E) when the coil is held stationary but the magnet is moved away from the cell
  Show Answer
  The correct answer is D .
• Question 113: Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination? Options:
  A) 6.0V, 16Ω
  B) 6.0V, 1Ω
  C) 1.5V, 4Ω
  D) 1.5V, 1Ω
  Show Answer
  The correct answer is D .
• Question 114: Which of the following waves is both transverse and mechanical? Options:
  A) Water waves
  B) Radio waves
  C) Sound waves
  D) X-rays
  Show Answer
  The correct answer is A .
• Question 115:

  Neutrons were discovered by

  Options:
  A) Faraday
  B) Dalton
  C) James Chadwick
  D) Rutherford
  Show Answer
  The correct answer is C .
• Question 116:

  Which of these is observed when air is pumped out of a discharge tube without lowering its pressure

  Options:
  A) the conductivity of the air increases
  B) the conductivity of the air decreases
  C) conduction does not occur
  D) spark are produced
  Show Answer
  The correct answer is C .
• Question 117: The distance between the fixed points of a centigrade thermometer is 20cm. What is the temperature when the mercury level is 4.5cm above the lower mark? Options:
  A) 22.5^oC
  B) 29.0^oC
  C) 90.0^oC
  D) 100.0^oC
  Show Answer
  The correct answer is A .
• Question 118: The operation of an optical fibre is based on the principal of Options:
  A) dispersion of light
  B) interference of light
  C) refraction of light
  D) polarization of light
  Show Answer
  The correct answer is C .
• Question 119: If a pump is capable of lifting 5000kg of water through a vertical height of 60m in 15 min, the power of the pump is Options:
  A) 2.2.5 x 10 ⁵js^-1
  B) 2.5 x 10⁴js^-1
  C) 3.3 x 10³js^-1
  D) 3.3 x 10²js^-1
  Show Answer
  The correct answer is C .
• Question 120:

  

  The figure above shows three capacitors, 2μF, 3μF and 6μF connected in series. If the p.d across the system is 12V, the p.d, across the 6μF capacitor is

  Options:
  A) 4V
  B) 12V
  C) 2V
  D) 6V
  Show Answer
  The correct answer is C .