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 1071: A force of 15N stretches a spring to a total length of 30cm. An additional force of 10N stretches the spring 5cm further. Find the natural length of the spring Options:
  A) 25.0cm
  B) 22.5cm
  C) 20.0cm
  D) 15.0cm
  Show Answer
  The correct answer is B .
• Question 1072: The difference observed in solids, liquids and gases can be accounted for by Options:
  A) The different molecules in each of them
  B) The spaces and forces acting between the molecules
  C) Thier melting points
  D) Their relative massess
  Show Answer
  The correct answer is B .
• Question 1073: The maximum permissible current through a galvanometer G of internal resistance 10$\mathrm{\Omega }$ is 0.05A. A resistance R is used to convert G into a voltmeter with a maximum reading of 100V. Find the value of R and how it is connected to G Options:
  A) 20,000 ohms in parallel
  B) 19,990 ohms in series
  C) 1990 ohms in series
  D) 100 ohms in series
  Show Answer
  The correct answer is C .
• Question 1074: Which of the following is a scalar quantity? Options:
  A) Tension
  B) Weight
  C) Impulse
  D) Upthrust
  E) Distance
  Show Answer
  The correct answer is E .
• Question 1075: The force with which an object is attracted to the earth is called its Options:
  A) acceleration
  B) mass
  C) gravity
  D) impulse
  E) weight
  Show Answer
  The correct answer is E .
• Question 1076: The instrument used to measure the pressure of a gas is Options:
  A) barometer
  B) thermometer
  C) hygrometer
  D) manometer
  Show Answer
  The correct answer is D .
• Question 1077:
  

  A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?

  Options:
  A) 0.19
  B) 0.24
  C) 0.40
  D) 0.22
  Show Answer
  The correct answer is A .
• Question 1078:

  A cannon is fired from town X, after how long is the sound heard at a town Y 4.95 km away?

  [velocity of sound in the air = 330 ms^-1]

  Options:
  A) 30 s
  B) 10 s
  C) 10 s
  D) 15 s
  Show Answer
  The correct answer is D .
• Question 1079:

  

  In the circuit above, the ammeter reads a current of 5.0 A when R = 8Ω and reads 7.0A when R = 5Ω. The value of the unknown resistance X is

  Options:
  A) 10.0Ω
  B) 7.5Ω
  C) 5.0Ω
  D) 2.5Ω
  Show Answer
  The correct answer is D .
• Question 1080: If tension is maintained on a stretched string of length 0.6m, such that its fundamental frequency of 220Hz is excited, determine the velocity of the transverse wave in the string. Options:
  A) 528 ms^-1
  B) 264 ms^-1
  C) 132 ms^-1
  D) 66 ms^-1
  Show Answer
  The correct answer is B .