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 161: The electrolyte in the Nickei-iron (Nife) accumulator is Options:
  A) potassium hydroxide solution
  B) dilute tetraoxosulphate(VI)acid
  C) copper tetraoxosulphate(VI)solution
  D) ammonium chloride solution
  Show Answer
  The correct answer is A .
• Question 162: A certain far - sighted person cannot see object that are closer to the eye than 50 cm clearly. Determine the power of the converging lens which will enable him to see at 25 cm Options:
  A) 0.06 D
  B) 0.02 D
  C) 0.03 D
  D) 0.04 D
  E) no option is correct
  Show Answer
  The correct answer is E .
• Question 163: The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and 2.0V when supplying a current of 3.0A. The internal resistance of the battery is Options:
  A) 0.5 $\mathrm{\Omega }$
  B) 1.0$\mathrm{\Omega }$
  C) 2.0$\mathrm{\Omega }$
  D) 4.0$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 164: The coefficient of static friction between a 40kg crate and concrete surface is 0.25. Find the magnitude of the minimum force needed to keep the crate stationary on the concrete base inclined at 45^o to the horizontal. [G = 10ms^-1] Options:
  A) 400N
  B) 300N
  C) 283N
  D) 212N
  Show Answer
  The correct answer is D .
• Question 165: Steam burn is more severe than that of boiling water because Options:
  A) steam burn is independent of relative humidity
  B) stem possesses greater heat energy per unit mass
  C) water boils at a higher temperature
  D) steam burn is dependent on relative humidity
  Show Answer
  The correct answer is B .
• Question 166: An air craft attempt too fly due north at 100 kmh^-1. If the wind blows against it from east to west at 60 kmh^-1, its resultant velocity is Options:
  A) 117 kmh^-1, N31^oE
  B) 127 kmh^-1, N31^oE
  C) 117 kmh^-1, N31^oW
  D) 127 kmh^-1, N31^oW
  Show Answer
  The correct answer is C .
• Question 167: A train has an initial velocity of 44ms^-1 and an acceleration of -4ms^-1. Its velocity after 10 seconds is Options:
  A) 2ms^-1
  B) 4ms^-1
  C) 8ms^-1
  D) 12ms^-1
  E) 16ms^-1
  Show Answer
  The correct answer is B .
• Question 168: A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full? Options:
  A) 10 hrs
  B) 18 hrs
  C) 20 hrs
  D) 25 hrs
  Show Answer
  The correct answer is B .
• Question 169: A rod of length 10cm is heated through 100^oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod? Options:
  A) 0.026 per degree centigrade
  B) 0.00026 per degree centigrade
  C) 0.26 per degree centigrade
  D) 1.0026 per degree centigrade
  E) 0.0026 per degree centigrade
  Show Answer
  The correct answer is B .
• Question 170: A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the Options:
  A) 80%
  B) 75%
  C) 50%
  D) 33%
  Show Answer
  The correct answer is B .