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 1641:

  One of the following readings represents the measurement of thelength of a metal rod using vernier callipers. Taking the reading accuracy into consideration, the most likely one is

  Options:
  A) 5.16cm
  B) 5.165cm
  C) 5.0cm
  D) 5.160cm
  Show Answer
  The correct answer is A .
• Question 1642: Total internal reflection occurs when light moves from Options:
  A) a dense medium to a less dense medium
  B) air to water
  C) water to glass
  D) a less dense to a dense medium
  Show Answer
  The correct answer is A .
• Question 1643: When the brakes in a car are applied, the frictional force force on the tyres is Options:
  A) is a disadvantage because it is in the direction of the motion of the car
  B) is a disadvantage because it is in the opposite direction of the motion of the car
  C) is an advantage because it is in the direction of the motion of the car
  D) is an advantage because it is in the opposite direction of the motion of the car
  Show Answer
  The correct answer is D .
• Question 1644: The terrestrial telescope has one extra lens more than the astronomical telescope. The extra lens is for Options:
  A) improving the sharpness
  B) creating an inverted image
  C) magnification of the image
  D) erection of the image
  Show Answer
  The correct answer is D .
• Question 1645: A boat travels due east at a speed 40ms^-1s across a river flow due south at 30ms^-1s. What is the resultant speed of the boat? Options:
  A) 1.3ms^-1
  B) 10.0ms^-1
  C) 50.0ms^-1
  D) 70.0ms^-1
  Show Answer
  The correct answer is C .
• Question 1646:

  

  The diagram above show s the force-extension curve of a piece of wire. The energy stored when the wire is stretched from E to F is

  Options:
  A) 7.5 x 10^-3J
  B) 2.5 x 10^-3J
  C) 1.5 x 10^-2J
  D) 7.5 x 10^-1J
  Show Answer
  The correct answer is A .
• Question 1647: The total length of a spring when a mass of 20g is hung from its end is 14cm, while its total length is 16cm when a mass of 30g is hung from the same end. Calculate the unstretched length of the spring assuming Hooke's law is obeyed. Options:
  A) 9.33cm
  B) 10.00cm
  C) 10.66cm
  D) 12.00cm
  E) 15.00cm
  Show Answer
  The correct answer is B .
• Question 1648: Steel is more suitable for permanent magnet than iron because the former Options:
  A) is easily demagnetized by shaing vigorously
  B) is an alloy of many metals
  C) is easily magnetized by alternating current through one cycle
  D) retains magnetism more than iron
  Show Answer
  The correct answer is D .
• Question 1649:
  

  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 1650:

  

  The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

  Options:
  A) 985 ohms
  B) 990 ohms
  C) 995 ohms
  D) 1000 ohms
  E) 1005 ohms
  Show Answer
  The correct answer is C .