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 1051: What is the best method of demagnetizing a steel bar magnet? Options:
  A) Hammering
  B) Heating it
  C) Rough handling it
  D) Solenoid method
  Show Answer
  The correct answer is D .
• Question 1052:

  A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point

  Options:
  A) 11.36km
  B) 12.36km
  C) 13.00km
  D) 14.36km
  Show Answer
  The correct answer is A .
• Question 1053: To determine the weight of an object you could Options:
  A) use a beam balance
  B) use a spring balance
  C) find the force necessary
  D) use none of these methods
  E) use any of these methods
  Show Answer
  The correct answer is E .
• Question 1054: Energy losses through eddy currents are reduced by using Options:
  A) low resistance wires
  B) insulated soft iron wires
  C) few turns of wires
  D) high resistance wires
  Show Answer
  The correct answer is B .
• Question 1055: Which of the following are true of atom? Options:
  A) atoms are indestructible
  B) all atoms of a pure substance, or elements are identical
  C) atoms of different substance have different weights
  D) all of the above
  E) A and B only
  Show Answer
  The correct answer is C .
• Question 1056: An electric water pump rate 1.5 kW, lifts 200kg of water through a vertical height of 6 meters in seconds. What is the efficiency of the pump? [g = 10ms^-2, neglecting air resistance] Options:
  A) 90.0%
  B) 85.0%
  C) 80.0%
  D) 65.0%
  Show Answer
  The correct answer is C .
• Question 1057:

  Which of the following statements are TRUE of isotopes?

  I. Isotopes of an element have the same chemical properties because they have the same number of electrons

  II. Isotopes of elements are normally separated using physical properties

  III. Isotopes of an element have the same number of protons in their nuclei

  Options:
  A) I and II only
  B) I and III only
  C) II and III only
  D) I, II and III
  Show Answer
  The correct answer is B .
• Question 1058:

  An alternating current can induce voltage because it has

  Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) high peak value
  Show Answer
  The correct answer is B .
• Question 1059: Calculate the inductance of a coil of resistance 30$\mathrm{\Omega }$ connected to a 100V a.c source if the coil draws an r.m.s current of 2A Options:
  A) 0.60H
  B) 2.50H
  C) 1.25H
  D) 0.04H
  Show Answer
  The correct answer is D .
• Question 1060: An astronomical telescope is said to be in normal adjustment when the Options:
  A) eye is accommodated
  B) focal length of objective lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .