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 1591: A 120V, 60W lamp is to be operated on 220V ac supply mains. calculate the value of non inductive resistance that would be required to ensure that the lamp is run on correct value Options:
  A) 100Ω
  B) 200Ω
  C) 300Ω
  D) 500Ω
  Show Answer
  The correct answer is B .
• Question 1592: In which of the following are the substance arranged in descending order of their thermal conductivities? Options:
  A) copper, steel, glass
  B) steel, copper, glass
  C) steel, glass, copper
  D) copper, glass, steel
  Show Answer
  The correct answer is A .
• Question 1593: The temperature at which the water vapour present in the air is just sufficient to saturate it is called the Options:
  A) ice point
  B) boiling point
  C) steam point
  D) dew point
  E) saturation point
  Show Answer
  The correct answer is D .
• Question 1594: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 1595:

  The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air.

  Options:
  A) 3.33%
  B) 5.55%
  C) 33.33%
  D) 55.55%
  Show Answer
  The correct answer is C .
• Question 1596: Which of the following machines does NOT apply the lever principle? Options:
  A) claw hammer
  B) wheel barrow
  C) single moving pulley
  D) sugartongs
  E) nutcrackers
  Show Answer
  The correct answer is C .
• Question 1597:

  Shadows and eclipses result from the

  Options:
  A) refraction of light
  B) reflection of light
  C) defraction of light
  D) rectilinear propagation of light
  Show Answer
  The correct answer is D .
• Question 1598:

  

  For what value of 6 are the forces in the diagram above in equilib4ruim

  Options:
  A) ${15}^{\circ }$
  B) ${30}^{\circ }$
  C) ${45}^{\circ }$
  D) ${60}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 1599:

  The diagram shows four positions of the bob of a simple pendulum. At which of these positions does the bob have maximum kinetic energy and minimum potential energy

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .
• Question 1600: The physical quantity that has the same dimensions as impulse is Options:
  A) energy
  B) momentum
  C) surface tension
  D) pressure
  Show Answer
  The correct answer is B .