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 1841: Under which of the following conditions is work done? Options:
  A) A man supports a heavy food above his head with his hands
  B) A boy climbs onto a table
  C) A man pushes unto a table
  D) A woman holds a pot of water
  Show Answer
  The correct answer is C .
• Question 1842: Which of the following phenomena explains the fact that a house whose roof is coated with white paint will be cooler in the hot season than one coated with black paint ? Options:
  A) conduction
  B) convection
  C) refraction
  D) reflection
  Show Answer
  The correct answer is D .
• Question 1843: The range of wavelengths of the visible spectrum is 400nm - 700nm. The wavelength of gamma rays is Options:
  A) longer than 700nm
  B) shorter than 700nm but longer then 400nm
  C) 550nm
  D) shorter than 400nm
  E) infinite
  Show Answer
  The correct answer is D .
• Question 1844: A gas has a volume of 100cm³ at 27^oC. If it is heated to temperature T until a final volume of 120cm³ is attained, calculate T Options:
  A) 33^oC
  B) 60^oC
  C) 87^oC
  D) 114^oC
  Show Answer
  The correct answer is C .
• Question 1845:

  I. A liquid boils when its saturated vapour pressure is equal to the external pressure

  II. Dissolved substances in pure water lead to increase in the boiling point.

  III. When the external pressure is increased, the boiling point increases.

  IV. Dissolved substances in pure water decrease the boiling point.Which combination of the above are peculiarities of the boiling point of a liquid?

  Options:
  A) I, II and III
  B) I, II, III and IV
  C) I, II and IV
  D) II, III and IV
  Show Answer
  The correct answer is A .
• Question 1846: If the volume of a gas is recoded as 76cm³ at a temperature of 27°C with a pressure of 800mmHg. What will be the volume of the gas at S.T.P? Options:
  A) 36.2cm³
  B) 25.7cm³
  C) 72.8cm³
  D) 24.3cm³
  Show Answer
  The correct answer is C .
• Question 1847:

  A man will exert the greatest pressurewhen he?

  Options:
  A) lies flat on his back
  B) lies on his belly
  C) stands on both feet
  D) stands on the toes of one foot
  Show Answer
  The correct answer is D .
• Question 1848:

  I. Increase the melting point of the liquid.

  II. Increase the boiling point of the liquid.

  III. Decrease the melting point of the liquid.

  IV. Decrease the boiling point of the liquid.

  Which of the statement above about the effect on increase in pressure in a liquid are correct?

  Options:
  A) I and II only
  B) I and III only
  C) II and III only
  D) III and IV only
  Show Answer
  The correct answer is C .
• Question 1849: Why does a piece of cork float on water? Options:
  A) there is no upthrust on it when completely immersed in water
  B) the upthrust on it when completely immersed in water
  C) the upthrust on it when completely immersed in water is less than its weight in air
  D) its specific gravity is greater than that of water
  E) its specific gravity is the same as that of water
  Show Answer
  The correct answer is E .
• Question 1850: What happens to the rays in a parallel beam of light? Options:
  A) They diverge as they travel
  B) they intersect
  C) They converge as they travel
  D) They meet at infinity.
  Show Answer
  The correct answer is D .