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 1451: In a nuclear fusion experiment, the loss of mass amounts to 1.0 x 10^-6kg. The amount of energy obtained from the fusion is Options:
  A) 3.0 x 10^-4J
  B) 3.0 x 10^-1J
  C) 9.0 x 10⁴J
  D) 9.0 x 10¹⁰J
  Show Answer
  The correct answer is D .
• Question 1452:

  A 2H inductor has negligible resistance and is connected to a $\frac{50}{\pi }$ Hz A.C supply. The reactance of the inductor is?

  Options:
  A) 200$\mathrm{\Omega }$
  B) 50$\mathrm{\Omega }$
  C) $\frac{100}{\pi }$
  D) $\frac{25}{\pi \mathrm{\Omega }}$
  Show Answer
  The correct answer is A .
• Question 1453:

  A siren having a ring of 200 hole makes 132 rev/min. A jet of air is directed on the set of holes. Calculate the frequency and wavelength in air of the note produced (take v = 350m/s)

  Options:
  A) 0.875m
  B) 0.625m
  C) 0.335m
  D) 0.125m
  Show Answer
  The correct answer is A .
• Question 1454: The electromagnetic waves that are sensitive to temperature changes are Options:
  A) X-rays
  B) Gamma-rays
  C) Ultra-violet rays
  D) Infra-red rays
  Show Answer
  The correct answer is D .
• Question 1455: Temperature is the measure of the Options:
  A) quantity of heat transferred into the molecules of an object
  B) mean kinetic energy of the molecules of the object
  C) kinetic energy of any individual molecule of the substance
  D) amount of work done by the molecules of the object
  Show Answer
  The correct answer is B .
• Question 1456:

  

  The value of T in the figure above is

  Options:
  A) 10.0N
  B) 11.8N
  C) 20.0N
  D) 40.0N
  Show Answer
  The correct answer is C .
• Question 1457: The vibration of an air column produces the sound in the Options:
  A) piano
  B) guiter
  C) flute
  D) school handbell
  Show Answer
  The correct answer is C .
• Question 1458: An immersion heater rated 2.0A, 240V is used to boil water from temperature 52°c to 100°c. If the mass of the water is 2.5kg. determine the time taken to boil the water.
  [specific heat capacity of water = 4.2 x 10³ jkg^-1 k^-1] Options:
  A) 1.05 x 10³s
  B) 1.05 x 10⁵s
  C) 1.05 x 10²s
  D) 1.05 x 10⁴s
  Show Answer
  The correct answer is A .
• Question 1459:

  A lead bullet of mass 0.05 kg is fired with a velocity of 200 ms into a lead block of mass 0.95 kg. Given that the lead block can move freely. the final kinetic energy after impact is

  Options:
  A) 100J
  B) 150J
  C) 50J
  D) 200J
  Show Answer
  The correct answer is C .
• Question 1460: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to M^a L^b T^c? Options:
  A) 1, – 2, 1
  B) 1, 2, – 2
  C) 1, 1, –2
  D) 2, 2, 1
  Show Answer
  The correct answer is B .