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 121: The absolute temperature of a perfect gas is proportional to the average Options:
  A) potential energy of the molecules
  B) seperation between the molecules
  C) kinetic energy of the molecules
  D) velocity of the molecules
  Show Answer
  The correct answer is C .
• Question 122: A mass of a liquid at 30^oC is mixed with a mass of the same liquid at 70^oC and the temperature of the mixture is 45^oC. Find the ratio of the mass of the cold liquid to the mass of the other liquid. Options:
  A) 3 : 5
  B) 5 : 3
  C) 3 : 7
  D) 7 : 3
  Show Answer
  The correct answer is B .
• Question 123: Light of energy 5eV falls on a metal of work function 3eV and electrons are liberated. The stopping potential is Options:
  A) 1.7V
  B) 2.0V
  C) 8.0V
  D) 15.0V
  Show Answer
  The correct answer is B .
• Question 124: A car accelerates uniformly from rest at 3ms^-2. its velocity after traveling a distance of 24m is Options:
  A) 12ms^-1
  B) 144ms^-1
  C) 72ms^-1
  D) 36ms^-1
  Show Answer
  The correct answer is A .
• Question 125: A thin wire with heavy weights attached to both ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called Options:
  A) condensation
  B) sublimation
  C) regelation
  D) fusion
  Show Answer
  The correct answer is C .
• Question 126:

  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 127:

  

  Fig 1 is a graph of force against extension for a spiral spring, the force constant of the spring is given by the

  Options:
  A) slope of the linear prtion of the graph
  B) length of the linear portion of the graph
  C) area under the linear portion of the graph
  D) area under the entire graph
  Show Answer
  The correct answer is A .
• Question 128:

  The near point of a patient's eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away?

  Options:
  A) 2 diopters
  B) 2.5 diopters
  C) 0.5 diopters
  D) 3 diopters
  Show Answer
  The correct answer is A .
• Question 129: The sign of the change on a charged glass rod may be determined with Options:
  A) a charged electroscope
  B) an uncharged electroscope
  C) a galvanometer
  D) an electrometer
  Show Answer
  The correct answer is A .
• Question 130:

  

  The figure above shows a uniform circular object, center R and diameter PS. A circular section 6 and Diameter PR is cut from it. if PQRS is a straight line, where is center of gravity of the figure

  Options:
  A) Q
  B) R
  C) A point between P and R
  D) A point between R and S
  Show Answer
  The correct answer is D .