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 461: A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body? Options:
  A) 8.7N
  B) 37.0N
  C) 87.0N
  D) 13.0N
  Show Answer
  The correct answer is B .
• Question 462:

  

  In fig 3, three forces F1, F2, and F3 acting at O are in equilibrium. If the magnitude of F1 is 10N,and the magnitude of F2 is 5N, find the magnitude of F3

  Options:
  A) 26.4N
  B) 15.0N
  C) 13.2N
  D) 10.0N
  Show Answer
  The correct answer is C .
• Question 463:

  A mass of 5kg is suspended from the ceiling of a lift with a light inextensible string. As the lift moves upwards with an acceleration of 2ms^-2, the tension in the string is [g = 10ms^-2]

  Options:
  A) 25N
  B) 40N
  C) 50N
  D) 60N
  E) 70N
  Show Answer
  The correct answer is D .
• Question 464: In copper plating, a current of 0.5A is allowed for cathode area of 100cm². If this current is maintained constant for 100 minutes, the thickness of the copper deposited will be approximately (the electrochemical equivalent of copper = 0.0003g/^oC, density of copper = 10^-4g/cm³ ) Options:
  A) 10^-2mm
  B) 10^-3mm
  C) 10^-4mm
  D) 10^-5mm
  E) 10^-6mm
  Show Answer
  The correct answer is E .
• Question 465: Which of the following pairs of light rays shows the widest separation in the spectrum of white light? Options:
  A) Red and blue
  B) Orange and green
  C) Red and indigo
  D) Violet and green
  E) Yellow and red
  Show Answer
  The correct answer is C .
• Question 466: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 467: 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 468: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 469: If negative charges are induced on an electroscope and a positively charged rod is brought near the cap of the electroscope, the leaves will Options:
  A) close up
  B) become positively charged
  C) become negatively charged
  D) open further
  Show Answer
  The correct answer is A .
• Question 470:

  

  A capacitor of 10µF is connected across a cell of 12 volts as shown above, calculate the energy stored in the capacitor

  Options:
  A) 7.2 x 10^-4J
  B) 1.4 x 10^-3J
  C) 1.4 x 10^-3J
  D) 1.2 x 10^-2J
  Show Answer
  The correct answer is A .