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 881: What happens to a water pool on a day when the humidity of the air is very low? Options:
  A) Temperature decreases
  B) Slow evaporation
  C) Temperature increases
  D) Rapid evaporation
  Show Answer
  The correct answer is D .
• Question 882:

  

  The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N

  Options:
  A) 275N
  B) 325N
  C) 375N
  D) 573N
  Show Answer
  The correct answer is C .
• Question 883: 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 884: A mirror of weight 75N is hung by a cord from a hook on the wall. If the cord makes an angle of 30^o with horizontal, the tension in the cord is Options:
  A) 100N
  B) 1500N
  C) 250N
  D) 150N
  Show Answer
  The correct answer is D .
• Question 885: An example of a scalar quantity is Options:
  A) velocity
  B) weight
  C) electric charge
  D) acceleration due to gravity
  E) momentum
  Show Answer
  The correct answer is C .
• Question 886: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to M^a L^b T^c? Options:
  A) 1, – 2, 1
  B) 1, 2, – 2
  C) 1, 1, –2
  D) 2, 2, 1
  Show Answer
  The correct answer is B .
• Question 887: During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is? Options:
  A) 1.0 g
  B) 0.5 g
  C) 3.0 g
  D) 2.0 g
  Show Answer
  The correct answer is D .
• Question 888: 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 889: 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 890: As the pressure of a fluid increases, its viscosity Options:
  A) decreases
  B) increases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is B .