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 1061:

  

  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 1062: A satellite is in a parking orbit if its period is Options:
  A) less than the period of the earth
  B) more than the period of the earth
  C) equal to the period of the earth
  D) the square of the period of the earth
  Show Answer
  The correct answer is C .
• Question 1063: A 40-W instrument has a resistance of 90$\mathrm{\Omega }$. On what voltage should it be operated normally? Options:
  A) 60V
  B) 150V
  C) 225V
  D) 3600V
  Show Answer
  The correct answer is A .
• Question 1064: A wave of frequency 10Hz forms a stationary wave pattern in a medium where the velocity is 20cms^-1. The distance between adjacent nodes is Options:
  A) 1.0cm
  B) 1.5cm
  C) 2.0cm
  D) 5.0cm
  Show Answer
  The correct answer is C .
• Question 1065: When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off. Options:
  A) 4.50ms^-1
  B) 11.25ms^-1
  C) 20.00ms^-1
  D) 45.00ms^-1
  Show Answer
  The correct answer is C .
• Question 1066: Isotopes are nuclei which have Options:
  A) the same number of nuetrons and electrons
  B) equal number of electrons and protons
  C) the same atomic number but different number of neutrons
  D) the same number of total particles
  Show Answer
  The correct answer is C .
• Question 1067: Vapour is said to be saturated on top of an enclosed liquid if _________ Options:
  A) The rate of condensation is greater than that of vapourization
  B) The rate of condensation is equal to that of vapourization
  C) There is neither condensation nor vaporization of the liquid
  D) The rate of condensation is less that that of vaporization
  Show Answer
  The correct answer is B .
• Question 1068: A thin converging lens has a power of 4.0 diopters determined its focal length. Options:
  A) 2.50m
  B) 0.03m
  C) 5.00m
  D) 0.25m
  Show Answer
  The correct answer is D .
• Question 1069: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 1070: A transformer has an efficiency of 92.5%. the ratio number of turns in the primary coil to that in the secondary coil is 128 : 45. If the current passing through the secondary coil is 9.0A, calculate the current passing through the primary-coil. Options:
  A) 2.93A
  B) 3.16A
  C) 3.42A
  D) 25.60A
  E) 27.68A
  Show Answer
  The correct answer is C .