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 661: The physical properties of sound waves can best be described by Options:
  A) reflection and diffraction
  B) polarization and reflection
  C) polarization and diffraction
  D) polarization and refraction
  Show Answer
  The correct answer is A .
• Question 662:

  A far sighted person cannot see objects that are less than 100cm away. If this person wants to read a book at 25cm, what type and focal length of lens does he need?

  Options:
  A) convex, 20cm
  B) concave, 20cm
  C) convex, 33cm
  D) concave, 33cm
  Show Answer
  The correct answer is A .
• Question 663: If a convex lens of focal length 12cm is used to produce a real image four times the size of the object, how far from the lens must the object be placed? Options:
  A) 10 cm
  B) 15 cm
  C) 20 cm
  D) 25 cm
  Show Answer
  The correct answer is B .
• Question 664:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 665: An astronomical telescope is said to be in normal adjustment when the Options:
  A) eye is accommodated
  B) focal length of objective lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 666: A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is Options:
  A) 3.3cm
  B) 6.5cm
  C) 7.5cm
  D) 10.8cm
  E) 15.0cm
  Show Answer
  The correct answer is C .
• Question 667:

  A magnet relay is a device used for?

  Options:
  A) reading the magnitude of magnetic flux
  B) controlling another circuit carrying larger current
  C) turning in sports
  D) storing magnetic field
  Show Answer
  The correct answer is B .
• Question 668:

  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 669:

  Which of the following will increases the boiling point of water?I. Taking it to a high altitude

  II. Dissolving a salt into it

  III. Heating it in a sealed flask

  IV. Increasing the rate of heat supply.

  Options:
  A) I only
  B) III & IV only
  C) II & III only
  D) II only
  Show Answer
  The correct answer is B .
• Question 670: A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P? Options:
  A) 1500N
  B) 500N
  C) 4166N
  D) 750N
  Show Answer
  The correct answer is A .