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 1111: Dewpoint is the temperature at which, water vapour in the atmosphere Options:
  A) turns into steam
  B) solidifies into ice pellets
  C) first condenses into liquid form
  D) is just sufficient to cause cooling
  E) has a relative humidity of fifty percent
  Show Answer
  The correct answer is D .
• Question 1112: If relative density of a metal is 19, what will be the mass of 20cm³ of the metal when immersed in water? Options:
  A) 380g
  B) 400g
  C) 360g
  D) 39g
  E) 180g
  Show Answer
  The correct answer is A .
• Question 1113:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 1114: If the fundamental frequency of a closed pipe organ on a day when the speed of sound is 340ms^-1 is 170Hz, then the length of the pipe is Options:
  A) 50cm
  B) 70cm
  C) 100cm
  D) 150cm
  E) 200cm
  Show Answer
  The correct answer is A .
• Question 1115:

  

  The total resistance measured at PQ in the diagram above is

  Options:
  A) 18.0Ω
  B) 11.0Ω
  C) 4.0Ω
  D) 2.0Ω
  Show Answer
  The correct answer is C .
• Question 1116: Calculate the upthrust on an object of volume 50cm³ which is immersed in liquid of density 103kgm^-3 [g = 10ms^-2] Options:
  A) 0.8N
  B) 2.5N
  C) 0.5N
  D) 1.0N
  Show Answer
  The correct answer is C .
• Question 1117: The sound of an electricity bell dies down slowly when air is slowly pumped out from a bottle because Options:
  A) the wavelength of sound becomes greater in the bottle
  B) sound cannot pass through the bottle
  C) sound needs a material medium
  D) sound can pass through a vacuum
  Show Answer
  The correct answer is C .
• Question 1118: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1119: 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 1120: A car of mass 1500 kg goes round a circular curve of radius 50m at a speed of 40 ms^-1. The magnitude of the centripetal force on the car is ? Options:
  A) 4.8 x 10⁴ N
  B) 4.8 x 10³ N
  C) 1.2 x 10³ N
  D) 1.2 x 10² N
  Show Answer
  The correct answer is A .