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 11: A magnet is similar to a bipolar charged system in that Options:
  A) it consists of two opposite poles - the north and south poles
  B) the earth's magnetic field has a south pole near the geographical north pole and a north pole near the geographical south pole
  C) the force of attraction and repulsion between opposite and between like poles obeys a law for electrostatic charges
  D) A and B only
  E) A and C only
  Show Answer
  The correct answer is E .
• Question 12:

  

  If current flows in the direction of the arrows in the solenoid above, the north pole is at

  Options:
  A) P
  B) Y
  C) X
  D) Q
  Show Answer
  The correct answer is D .
• Question 13: Which of the following statements about radioactivity are true? i. alpha particle is positively charged ii. Beta particle is negatively charged iii. Gamma ray is neutral iv. Beta particle has the same mass as helium atom v. Gamma ray is charged Options:
  A) i, ii, iii and iv only
  B) iv and v only
  C) i, ii and iii only
  D) i, ii and v only
  E) all
  Show Answer
  The correct answer is C .
• Question 14:

  A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium

  Options:
  A) an increase in the kinetic energy of the body
  B) an increase in the potential energy of the body
  C) a decrease in the kinetic energy of the body
  D) an increase in the height of the body
  Show Answer
  The correct answer is B .
• Question 15: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 16: 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 17: The amplitude of oscillation of a simple pendulum bob diminishes slowly because Options:
  A) energy is applied by some external agencies
  B) frictional forces dissipate the energy of motion
  C) the frequency of oscillation increases with the mass of the bob
  D) the frequency of oscillation varies with time
  E) the period of oscillation varies with time.
  Show Answer
  The correct answer is A .
• Question 18: Which of the following instruments can be used to measure e.m.f. most accurately. Options:
  A) Ammeter
  B) Galvanometer
  C) Metre bridge
  D) Potentiometer
  E) Voltmeter
  Show Answer
  The correct answer is D .
• Question 19: Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body Options:
  A) is also uniform
  B) must always be zero when the body stops accelerating
  C) will increase with time in the direction of the acceleration
  D) is equal to the quotient of distance travelled and time
  E) is the product of the distance travelled and time
  Show Answer
  The correct answer is C .
• Question 20: 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 .