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 11:

  A lead bullet of mass 0.05 kg is fired with a velocity of 200 ms into a lead block of mass 0.95 kg. Given that the lead block can move freely. the final kinetic energy after impact is

  Options:
  A) 100J
  B) 150J
  C) 50J
  D) 200J
  Show Answer
  The correct answer is C .
• Question 12: A stone and a feather are dropped from the same height above the earth surface. ignoring air resistance, which of the following is correct? Options:
  A) the feather will be brown away by the wind while stone will drop steadily
  B) the stone and the feather will both reach the ground a the same time
  C) the feather will reach the ground first
  D) the stone will reach the ground first
  Show Answer
  The correct answer is B .
• Question 13:

  

  In the diagram given if the atmospheric pressure is 760mm, the pressure in the chamber G Is

  Options:
  A) 660mmHg
  B) 890mmHg
  C) 690mmHg
  D) 860mmHg
  Show Answer
  The correct answer is C .
• Question 14:

  If the attraction of the sun is suddenly ceased, the earth would continue to move in a straight line making a tangent with the original orbit. This statement is derived from Neutron's

  Options:
  A) First law of motion
  B) Second law of motion
  C) Third law of motion
  D) Law of universal gravitation
  Show Answer
  The correct answer is A .
• Question 15:

  The lower fixed part of a faulty thermometer reads 2°C while the upper fixed point is 100°C.

  What is the true temperature when the thermometer reads 51°C?

  Options:
  A) 52°C
  B) 50°C
  C) 49°C
  D) 46°C
  Show Answer
  The correct answer is B .
• Question 16: Change of state is accompanied by change of Options:
  A) temperature
  B) volume
  C) heat content
  D) temperatureb and volume
  E) volume and heat content
  Show Answer
  The correct answer is C .
• Question 17: The electrochemical equivalent of platinum is 5.0 x 10^-7kgC^-1 to plate-out 1.0kg of platinum, a current of 100A must be passed through an appropriate vessel for Options:
  A) 5.6 hours
  B) 56 hours
  C) 1.4 x 10^{4 hours}
  D) 2.0 x 10^{4 hours}
  Show Answer
  The correct answer is A .
• Question 18:

  

  A Uniform beam PQ of mass 20kg and length 5m is balanced as shown above, a man of weight 800N stands at M such that QM = 2m. The reaction at P and Q respectively are(take g = 10ms^-2)

  Options:
  A) 300N and 500N
  B) 420N and 580N
  C) 220N and 380N
  D) 580N and 420N
  E) 382N and 220N
  Show Answer
  The correct answer is B .
• Question 19: The radioisotope ${}_{92}^{235}U$ decays by emitting two alpha particles, three beta particles and a gamma ray. What is the mass and atomic number of the resulting element? Options:
  A) 215 and 88
  B) 91 and 227
  C) 227 and 91
  D) 92 and 238
  Show Answer
  The correct answer is C .
• Question 20:

  A safety precaution designed to prolong the life of a lead acid accumulator is

  Options:
  A) By topping up the cells with concentrated acid
  B) The use of naked flame when charging the battery
  C) Keeping the specific gravity of the electrolyte within specified range
  D) By connecting wires to the terminals directly when testing the level of charging
  Show Answer
  The correct answer is C .