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 51: A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 10³N, calculate the speed of the bullet just before it hits the wooden block. Options:
  A) 450ms^-1
  B) 400ms^-1
  C) 300ms^-1
  D) 250ms^-1
  Show Answer
  The correct answer is C .
• Question 52: 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 53:

  A 35 kΩ is connected in series with a resistance of 40 kΩ. What resistance R must be connected in parallel with the combination so that the equivalent resistance is equal to 25 kΩ?

  Options:
  A) 40 kΩ
  B) 37.5 kΩ
  C) 45.5 kΩ
  D) 30 kΩ
  Show Answer
  The correct answer is B .
• Question 54: Calculate the force acting on an electron of charge 1.5 x 10^-19C placed in an electric field of intensity 10⁵Vm^-1 Options:
  A) 1.5x10^-11N
  B) 1.5x10^-12N
  C) 1.5x10^-13N
  D) 1.5x10^-14N
  Show Answer
  The correct answer is D .
• Question 55: Which of the following instruments can be used to measure current in an a.c circuit? Options:
  A) Hot wire ammeter
  B) Moving coil ammeter
  C) Tangent galvanometer
  D) Moving coil galvanometer
  Show Answer
  The correct answer is D .
• Question 56: If a wire 30 cm long is extended to 30.5 cm by a force of 300 N. find the strain energy of wire Options:
  A) 0.75 J
  B) 7.50 J
  C) 75.00 J
  D) 750.00 J
  Show Answer
  The correct answer is A .
• Question 57: The terminal velocity of a ball-bearing falling through a viscous fluid reached when the Options:
  A) upthrust is equal to the weight of the ball
  B) ball accelerate uniformly
  C) upthrustis equal to the velocity of the ball
  D) velocity is uniform
  Show Answer
  The correct answer is D .
• Question 58:

  A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?

  [Refractive index of water = 1.33]

  Options:
  A) 13.300m
  B) 0.750m
  C) 1.013m
  D) 1.330m
  Show Answer
  The correct answer is D .
• Question 59: Gamma rays are produced when Options:
  A) high velocity electrons are abruptly stopped in metals
  B) energy changes occur within the nucleus of atoms
  C) energy changes occur within the electronic structure of atoms
  D) electrons are deflected in very strong magnetic fields
  Show Answer
  The correct answer is B .
• Question 60: When some ice cubes are added to a glass of warm water, the glass is cooled by a process of Options:
  A) conduction only
  B) convection only
  C) conduction and convection
  D) conduction and radiation
  E) radiation only
  Show Answer
  The correct answer is C .