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 1:

  The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

  Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 2: The distance between two successive crests of a wave is 15cm and the velocity 300ms^-1. Calculate the frequency. Options:
  A) 2.0x10²Hz
  B) 4.5x10³Hz
  C) 2.0x10³Hz
  D) 4.5x10²Hz
  Show Answer
  The correct answer is C .
• Question 3:

  The electrolyte used in the Nickel-Iron (NiFe) accumulator is

  Options:
  A) dilute tetraoxosulphate(VI) acid
  B) barium chloride solution
  C) potassium hydroxide solution
  D) sodium hydroxide solution
  Show Answer
  The correct answer is C .
• Question 4:

  I. Jet propelled aircraft
  II. Rocket propulsion
  III. The recoil of a gun
  IV. A person walking

  Which of the above is based on Newton's third law of motion

  Options:
  A) I and II only
  B) I, II, III, and IV only
  C) I and III only
  D) I, II and III only
  Show Answer
  The correct answer is B .
• Question 5: If a charged ion goes through combined electric and magnetic fields, the resultant emergent velocity of the ion is Options:
  A) E/B
  B) EB
  C) B/E
  D) E - B
  Show Answer
  The correct answer is A .
• Question 6: 22,000J of heat is required to raise the temperature of 1.5kg of paraffin from 20^oC to 30^oC. Calculate the specific heat capacity of paraffin. Options:
  A) 1466Jkg^-1oC^-1
  B) 2933Jkg^-1oC^-1
  C) 4400Jkg^-1oC^-1
  D) 5866Jkg^-1oC^-1
  Show Answer
  The correct answer is A .
• Question 7: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 8: What is the apparent colour of a RED SHIRT when viewed in PURE green light? Options:
  A) Red
  B) Green
  C) Yellow
  D) Black
  E) Blue
  Show Answer
  The correct answer is D .
• Question 9:

  The density of a certain oil on frying becomes

  0.4 kgm^-3 with the volume of 20m³. what will be its initial volume when its initial density is 0.8 kgm^-3 assuming no loss of oil due to spillage?

  Options:
  A) 12 kgm^-3
  B) 10 kgm^-3
  C) 8 kgm^-3
  D) 5 kgm^-3
  Show Answer
  The correct answer is B .
• Question 10: Which of the following electromagnetic waves is least energetic? Options:
  A) Infra-red rays
  B) X-rays
  C) Ultra-violet rays
  D) Gamma rays
  Show Answer
  The correct answer is A .