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 2251: If the normal atmospheric pressure in a laboratory supports a column of mercury 0.76m high and the relative density of mercury is 13.8, then the height of water column which atmospheric pressure will support in the same laboratory at the same time is Options:
  A) 0m
  B) 10m
  C) 13m
  D) 14m
  E) 18m
  Show Answer
  The correct answer is B .
• Question 2252: Quantities of heat Q can be measured using a container called Options:
  A) Thermometer
  B) Measuring cylinder
  C) Calorimeter
  D) Meter rule
  Show Answer
  The correct answer is C .
• Question 2253: If a body mass 5kg is thrown vertically upwards with velocity u,at what height will the potential energy equal to the kinetic energy? Options:
  A) h =(u)²/g
  B) h = (u)²/4g
  C) h = (2u)²/g
  D) h = (u)²/2g
  Show Answer
  The correct answer is B .
• Question 2254: On which of the following is the operation of a moving coil galvanometer based? Options:
  A) Magnetic effect of electric current
  B) Electromagnetic induction
  C) Chemical reaction produced by electricity
  D) Force on current carrying conductor in a magnetic field
  E) Electrical energy and power
  Show Answer
  The correct answer is D .
• Question 2255:

  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 2256: Radio waves have a velocity of 3 x 10⁸ms^-1. A radio station sends out a broadcast on a frequency of 800kHz. The wavelength of the broadcast is Options:
  A) 375.0m
  B) 267.0m
  C) 240.0m
  D) 37.5m
  E) 26.7m
  Show Answer
  The correct answer is A .
• Question 2257: The maximum kinetic energy of the photoelectron emitted from a metal surface is 0.34eV. If the work function of the metal surface is 1.83eV,find the stopping potential. Options:
  A) 2.17V
  B) 1.49V
  C) 1.09V
  D) 0.34V
  Show Answer
  The correct answer is D .
• Question 2258: Which of the following will reduce the frequency of oscillation of a simple pendulum? Options:
  A) Decreasing the length of the string
  B) Increasing the amplitude of oscillation
  C) Increasing the length of the string
  D) Increasing the mass of the bob
  E) Reducing the mass of the bob.
  Show Answer
  The correct answer is C .
• Question 2259: The radiator of a motor car is cooled by Options:
  A) radiation
  B) conduction
  C) convection
  D) radiation and conduction
  Show Answer
  The correct answer is C .
• Question 2260: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .