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 1:

  When the temperature of a liquid increases,its surface tension

  Options:
  A) decreases
  B) increases
  C) remains constant
  D) increases then decreases
  Show Answer
  The correct answer is A .
• Question 2: A 120 V, 60 W lamp is to be operated on 220 V a.c. the supply mains. calculate the values of non-inductive resistance that would be required to ensure that the lamp is run on current value. Options:
  A) 100 Ω
  B) 200 Ω
  C) 300 Ω
  D) 500 Ω
  Show Answer
  The correct answer is B .
• Question 3:

  An incident ray XY makes an angle of 15${}^{\circ }$ with a fixed line AY which is normal to surface of a plane mirror if the mirrow is turned as indicated by the arrow through ${40}^{\circ }$, what angle will the reflected ray make with AY?

  Options:
  A) ${25}^{\circ }$
  B) ${40}^{\circ }$
  C) ${15}^{\circ }$
  D) ${55}^{\circ }$
  E) ${95}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 4: Under constant tension and constant mass per unit length, the note produced by a plucked string is 500Hz when the length of the string is 0.90m. At what length is the frequency 150Hz? Options:
  A) 3m
  B) 4m
  C) 5m
  D) 6m
  Show Answer
  The correct answer is A .
• Question 5: The total energy required to send a unit positive charge round a complete electrical circuit is the Options:
  A) kinetic energy
  B) potential difference
  C) electromotive force
  D) electrical energy
  Show Answer
  The correct answer is B .
• Question 6:

  

  Fig 4 represents a block-and-tackle pulley system on which an effort of W newtons supports a load of 120.0N if the efficiency of the system is 40% then the value of W is

  Options:
  A) 28.0N
  B) 48.0N
  C) 50.0N
  D) 288.0N
  Show Answer
  The correct answer is C .
• Question 7: An inclined plane of angle $\theta$, acting as a simple machine, has a velocity ratio Options:
  A) sin$\theta$
  B) $\frac{1}{\text{sin}\theta }$
  C) cos$\theta$
  D) $\frac{1}{\text{cos}\theta }$
  E) sin$\theta cos\theta$
  Show Answer
  The correct answer is B .
• Question 8: When heat is applied to one end of a metal rod, the molecules at the other end soon begin to vibrate with greater amplitude than before because heat has been transferred by Options:
  A) radiation
  B) convection
  C) conduction
  D) evaporation
  Show Answer
  The correct answer is C .
• Question 9:

  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 10:

  A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that

  Options:
  A) white light Is an electromagnetic wave
  B) the prism has all the colours of the white light
  C) different colours of white light travel with different speeds in glass
  D) white light has undergone total Internal reflection in the prism
  Show Answer
  The correct answer is C .