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 1051: 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 .
• Question 1052:

  

  The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W.

  Options:
  A) 13.3N
  B) 20.0N
  C) 40.0N
  D) 80.0N
  Show Answer
  The correct answer is C .
• Question 1053: If 8 x 10^-2J of work is required to move 100$\mu$C of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y is Options:
  A) 4.0 x 10² v
  B) 4.0 x 10⁴ v
  C) 8.0 x 10² v
  D) 8.0 x 10² v
  Show Answer
  The correct answer is C .
• Question 1054:

  A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  Options:
  A) no charge and a zero potential
  B) a positive charge and a zero potential
  C) a negative charge and a positive potential
  D) a negative charge and a negative potential
  Show Answer
  The correct answer is D .
• Question 1055: An electric lamp marked 240v, 60 W is left to operate for an hour. How much energy is generated by the filament? Options:
  A) 3.86 x 10⁵J
  B) 3.56 x 10⁵J
  C) 1.80 x 10⁴J
  D) 2.16 x 10⁵J
  Show Answer
  The correct answer is D .
• Question 1056:

  

  In the diagram shown, If the south-poles of two magnets stroke a steel bar, the polarities at T and V will respectively be

  Options:
  A) north and south
  B) south and south
  C) north and north
  D) south and north
  Show Answer
  The correct answer is C .
• Question 1057: Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light? Options:
  A) source, slit, converging lens, prism, converging lens, screen.
  B) source, slit, diverging lens, prism, diverging lens, screen.
  C) source, converging lens, prism, diverging lens, screen.
  D) source, slit, prism, diverging lens, converging lens, screen.
  E) source, slit, prism, diverging lens, sreen.
  Show Answer
  The correct answer is A .
• Question 1058: Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high Options:
  A) 10 cm
  B) 16 cm
  C) 5 cm
  D) 14 cm
  Show Answer
  The correct answer is D .
• Question 1059: An object of weight 80kg on earth is taken to a planet where acceleration due to gravity is one-third of its value on earth. The weight of the object on the planet is Options:
  A) 48N
  B) 12N
  C) 27N
  D) 36N
  Show Answer
  The correct answer is C .
• Question 1060:

  The process whereby a liquid turns spontaneously into vapour is called

  Options:
  A) regelation
  B) evaporation
  C) boiling
  D) sublimation
  Show Answer
  The correct answer is B .