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 2201:

  A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1, determine the work one by the friction. [g = 10ms²]

  Options:
  A) 2 $\times$ 10^-4
  B) 2 $\times$ 10^-3
  C) 2 $\times$ 10¹
  D) 2 $\times$ 10²
  Show Answer
  The correct answer is B .
• Question 2202:

  Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat capacity of copper = 400Jkg${}^1$k${}^{-1}$, latent heat of fusion of ice = 3.3 x 10${}^5$Jkg${}^{-1}$)

  Options:
  A) $\frac{8}{33}$kg
  B) $\frac{3.3}{80}$kg
  C) $\frac{80}{33}$kg
  D) $\frac{3.3}{8}$kg
  Show Answer
  The correct answer is A .
• Question 2203: A lens of focal length 12.0cm forms an upright image three times the size of a real object. The distance between the object and the images is Options:
  A) 8.0cm
  B) 16.0cm
  C) 24.0cm
  D) 32.0cm
  Show Answer
  The correct answer is D .
• Question 2204:

  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 2205: Of the following derived units, the one that is not a unit of power is Options:
  A) joule/second
  B) ampere volt
  C) ampere²/volt
  D) ohm²/volt
  E) volts²
  Show Answer
  The correct answer is C .
• Question 2206:

  A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?

  Options:
  A) 3m
  B) 5m
  C) 6m
  D) 10m
  Show Answer
  The correct answer is C .
• Question 2207: The resultant force of a couple is ………? Options:
  A) Infinity
  B) Zero
  C) One
  D) Half
  Show Answer
  The correct answer is B .
• Question 2208:

  

  In the diagram given if the atmospheric pressure is 760mm, the pressure in the chamber G Is

  Options:
  A) 660mmHg
  B) 890mmHg
  C) 690mmHg
  D) 860mmHg
  Show Answer
  The correct answer is C .
• Question 2209: The core of an efficient transformer should consist of laminated pieces of metal in order to Options:
  A) increase the heat produced by increasing the eddy current
  B) increase the heat produced by reducing the eddy current
  C) reduce the heat produced by increasing the eddy current
  D) reduce the heat produced by reducing the eddy current
  Show Answer
  The correct answer is D .
• Question 2210:

  A magnet relay is a device used for?

  Options:
  A) reading the magnitude of magnetic flux
  B) controlling another circuit carrying larger current
  C) turning in sports
  D) storing magnetic field
  Show Answer
  The correct answer is B .