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: A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is Options:
  A) 2g
  B) 6g
  C) 10g
  D) 18g
  Show Answer
  The correct answer is A .
• Question 1112: A tap supplies water at 25^oC while another supplies water at 75^oC. If a man wishes to bathe with water at 40^oC, the ratio of the mass of cold water to the mass of hot water required is Options:
  A) 1 : 3
  B) 15 : 8
  C) 7 : 3
  D) 3 : 1
  Show Answer
  The correct answer is C .
• Question 1113: A spring of force constant 1500Nm^-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string Options:
  A) 1.9J
  B) 2.8J
  C) 3.45J
  D) 0.43J
  Show Answer
  The correct answer is A .
• Question 1114: A body of mass 4.2kg moving with velocity 10ms^-1 due east, hits a stationary body of mass 2.8kg. If they stick together after collision and move with velocity V due east, calculate the value of V Options:
  A) 3ms^-1
  B) 6ms^-1
  C) 7ms^-1
  D) 15ms^-1
  E) 17ms^-1
  Show Answer
  The correct answer is B .
• Question 1115: A man wears convex lens glasses of focal length 40cm in order to correct his eye defect. instead of the optimum 25cm, his least distance of distinct vision is Options:
  A) 14cm
  B) 28cm
  C) 75cm
  D) 150cm
  Show Answer
  The correct answer is D .
• Question 1116: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 1117: If a current of 2.5A flows through an electrolyte for 3 hours and 1.8g of a substance is deposited, what is the mass of the substance that will be deposited if a current of 4A flows through it for 4.8 hours? Options:
  A) 2.4g
  B) 3.2g
  C) 4.6g
  D) 4.8g
  Show Answer
  The correct answer is C .
• Question 1118:

  

  Calculate the refractive index of the material for the glass prism in the diagram above

  Options:
  A) ^√2/₂
  B) ⁴/₃
  C) √2
  D) ³/₂
  Show Answer
  The correct answer is C .
• Question 1119: Which of the following may be used to explain a mirage? i. layers of air near the road surface have varying refractive indices in hot weather. ii. road surfaces sometimes become good reflectors in hot weathers. iii. light from the sky can be reflected upwards after coming close to the road surface. Options:
  A) ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii only
  Show Answer
  The correct answer is C .
• Question 1120: Which of the following is NOT a vector quantity? Options:
  A) altitude
  B) acceleration
  C) displacement
  D) weight
  Show Answer
  The correct answer is A .