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 1121:

  

  What is the resultant capacity of the circuit

  Options:
  A) 1.5µF
  B) 18.0µF
  C) 6.0µF
  D) 6.8µF
  E) 8.83µF
  Show Answer
  The correct answer is A .
• Question 1122:

  

  Find the tension T1 in the diagram above if the system is in equilibrium. [G = 10ms^-2]

  Options:
  A) 200/√3N
  B) 100/√3N
  C) 300/√3N
  D) 100N
  Show Answer
  The correct answer is B .
• Question 1123:

  

  Given that SQ = 10cm and SP = 6cm, the refractive index of a block of glass shown above is

  Options:
  A) 0.30
  B) 0.60
  C) 1.67
  D) 2.33
  E) 2.36
  Show Answer
  The correct answer is C .
• Question 1124: In an electrolysis experiment, a cathode of mass 5g is found o weigh 5.01g after a current of 5A flows for 50 seconds. What is the electrochemical equivalent of the deposited substance? Options:
  A) 0.00004g/C
  B) 0.00002g/C
  C) 0.02500g/C
  D) 0.05000g/C
  E) 0.00001g/C
  Show Answer
  The correct answer is A .
• Question 1125: A 12V battery has an internal resistance of 0.5W.If a cable of 1.0W resistance is connected across the two terminals of the battery, the current drawn from the battery is Options:
  A) 16.0A
  B) 8.0A
  C) 0.8A
  D) 0.4A
  Show Answer
  The correct answer is B .
• Question 1126: By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens? Options:
  A) 15.0
  B) 2.5
  C) 1.5
  D) 0.4
  Show Answer
  The correct answer is B .
• Question 1127: At low humidity in an environment, the human skin is usually? Options:
  A) damp and rough
  B) damp and smooth
  C) dry and rough
  D) dry and smooth
  Show Answer
  The correct answer is C .
• Question 1128: The value of x, y and z respectively in the expression M^xL^yT^z for the universal gravitational constant G are Options:
  A) 2, -3, -2
  B) -1, 3, -2
  C) -1, 2, -3
  D) -2, -1, 3
  Show Answer
  The correct answer is B .
• Question 1129: A wire of 5Ω resistance is drawn out so that its new length is two times the original length. If the resistivity of the wire remains the same and the cross-sectional area is halved, the new resistance is Options:
  A) 40Ω
  B) 20Ω
  C) 10Ω
  D) 5Ω
  Show Answer
  The correct answer is B .
• Question 1130:

  Which of the following is not correct about the molecules of a substance in a gaseous state. They?

  Options:
  A) are in a constant state of motion
  B) have different speeds
  C) have a temperature which is measured by the average kinetic energy
  D) The collision between the gases is perfectly inelastic
  Show Answer
  The correct answer is D .