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 611:

  

  Which of the following bodies, each with centre of gravity G, lying on a horizontal table, is/are in unstable equilibrium?

  Options:
  A) II only
  B) III only
  C) I and IV only
  D) II and III only
  Show Answer
  The correct answer is B .
• Question 612: The action of blotting paper on ink is due to Options:
  A) diffusion
  B) osmosis
  C) capillarity
  D) surface tension
  Show Answer
  The correct answer is C .
• Question 613: A glass bottle of initial volume 2 x 10⁴ cm³ is heated from 20^oC to 50^oC. If the linear expansivity of glass is 9 x 10⁶K^-1, the volume of the bottle at 50^oC is Options:
  A) 20016.2cm³
  B) 20005.4cm³
  C) 20008.1cm³
  D) 20013.5cm³
  Show Answer
  The correct answer is A .
• Question 614:

  A parallel plate capacitor separated by an air gap is made of $0.8m^2$tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

  Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

  Options:
  A) 3.54nC
  B) 42.5nC
  C) 35.4nC
  D) 4.25nC
  Show Answer
  The correct answer is B .
• Question 615:

  A man will exert the greatest pressurewhen he?

  Options:
  A) lies flat on his back
  B) lies on his belly
  C) stands on both feet
  D) stands on the toes of one foot
  Show Answer
  The correct answer is D .
• Question 616: The absolute temperature of a perfect gas is proportional to the average Options:
  A) potential energy of the molecules
  B) seperation between the molecules
  C) kinetic energy of the molecules
  D) velocity of the molecules
  Show Answer
  The correct answer is C .
• Question 617:

  The branch of physics that deals with the motion of objects and the forces acting on them is called:

  Options:
  A) Electromagnetism
  B) Thermodynamics
  C) Mechanics
  D) Quantum mechanics
  Show Answer
  The correct answer is C .
• Question 618: How long does it take a 750W heater to raise the temperature of 1kg of water from 20^oC to 50^oC [specific heat capacity of water = 4200Jkg^-1K^-1] Options:
  A) 84s
  B) 112s
  C) 168s
  D) 280s
  Show Answer
  The correct answer is C .
• Question 619: A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is 500ms^-1, what is the value of F? Options:
  A) 0.4N
  B) 100.0N
  C) 250.0N
  D) 1000.0N
  Show Answer
  The correct answer is B .
• Question 620: A real object is placed at a distance ucm in front of a curved mirror of focal length fcm. If the image is upright and magnified, then the mirror is Options:
  A) convex and u =2f
  B) concave and u = 2f
  C) convex and u = f
  D) concave and u = f
  Show Answer
  The correct answer is A .