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 2791: 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 2792: the ratio of the linear expansivity of copper to that of iron is approximately 1.5. A specimen of iron and a specimen of copper expands by the same amount per unit rise in temperature. The ratio of their length is Options:
  A) 3
  B) 1.5
  C) 1.32
  D) 1
  E) 0.67
  Show Answer
  The correct answer is E .
• Question 2793: Which of the following statements is NOT correct? Options:
  A) The average range of distinct vision for a normal eye is from the far distance (infinity) up to about 25cm in front of the eye
  B) Longsighted people have difficulty in making the eye lense sufficiently powerful to focus on nearby objects
  C) Shortsighted people cannot accommodate distant objects
  D) Longsighted people need diverging spectacle lenses
  E) A person with long sight has his eye-ball too short and the image of an object is therefore formed behind the retina
  Show Answer
  The correct answer is D .
• Question 2794: A calibrated potentiometer is used to measure the e.m.f. of a cell because the Options:
  A) internal resistance of a cell is small compared with that of the potentiometer
  B) potentiometer has a linear scale
  C) potentiometer takes no current from the cell
  D) resistance of the potentiometer is less than that of a voltmeter
  Show Answer
  The correct answer is C .
• Question 2795: A piano wire 0.5m long has a total mass of 0.01kg and is stretched with a tension of 800N. Calculate the frequency of the wire when it sounds its fundamental note Options:
  A) 200Hz
  B) 100Hz
  C) 4Hz
  D) 2Hz
  Show Answer
  The correct answer is A .
• Question 2796:

  

  A short bar magnet is placed in earth's magnetic field, as shown above, which of the points II and III are/is possible positions of a neutral point?

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II
  E) I,II and III
  Show Answer
  The correct answer is C .
• Question 2797:

  Which of the following is NOT an example of elementary modern physics?

  Options:
  A) Classical mechanics
  B) Quantum mechanics
  C) Special relativity
  D) Nuclear physics
  Show Answer
  The correct answer is A .
• Question 2798: In 24 days a radioactive isotope decreases in mass from 64g to 2g. What is the half life of the radioactive material Options:
  A) 0.75 days
  B) 2.58 days
  C) 4 days
  D) 4.80 days
  E) 6 days
  Show Answer
  The correct answer is D .
• Question 2799:

  

  In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 6 ohms,the value of the unknown resistance X is

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is A .
• Question 2800: A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is Options:
  A) 36.87^oC
  B) 53.13^oC
  C) 90^oC
  D) 136^oC
  E) 143.13^oC
  Show Answer
  The correct answer is B .