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 491: The spiral spring of a spring balance is 25.0cm long when 5N hangs on it and 30cm long, when the weight is 10N. What is the length of the spring if the weight is 3N assuming Hooke's law is obeyed? Options:
  A) 15.0cm
  B) 17.0cm
  C) 20.0cm
  D) 23.0cm
  Show Answer
  The correct answer is D .
• Question 492: 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 493:

  

  In the diagram above, the pressure of the gas is

  Options:
  A) 86 cm of mercury
  B) 66 cm of mercury
  C) 96 cm of mercury
  D) 76 cm mercury
  Show Answer
  The correct answer is A .
• Question 494:

  During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because

  Options:
  A) all the heat is used to break the bonds holding the molecules of the solid together
  B) the heat capacity has become very large as the substance melts
  C) the heat energy is quickly conducted away
  D) the heat gained is equal to the heat lost by the substance
  Show Answer
  The correct answer is A .
• Question 495: Which one of the following is a vector quantity? Options:
  A) Temperature gradient
  B) Mass
  C) Work
  D) Time
  Show Answer
  The correct answer is A .
• Question 496: A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated? Options:
  A) 70°
  B) 45°
  C) 25°
  D) 20°
  Show Answer
  The correct answer is D .
• Question 497: If the pressure of the vapour on top of an enclosed liquid is equal to the atmospheric pressure, what will be the temperature of the liquid enclosed? Options:
  A) room temperature
  B) boiling point
  C) freezing point
  D) standard temperature
  Show Answer
  The correct answer is B .
• Question 498: A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their Options:
  A) frequency
  B) amplitude
  C) direction of vibration of the particles of the medium
  D) period of vibration of the particles of the medium
  Show Answer
  The correct answer is C .
• Question 499:

  Which of the following option is right if an object fall freely to the ground?1. The total energy is Kinetic

  2. The ratio of potential energy to kinetic energy is constant

  3. The sum of potential and kinetic is constant

  Options:
  A) 1 only
  B) 2 only
  C) 3 only
  D) 1 and 2 only
  Show Answer
  The correct answer is C .
• Question 500: Am elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is Options:
  A) 12cm
  B) 20cm
  C) 18cm
  D) 15cm
  Show Answer
  The correct answer is C .