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 11: A certain radioactive source emits radiations that were found to be deflected by both magnetic and electric fields. The radiations are Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) unltr-violet rays
  Show Answer
  The correct answer is A .
• Question 12: Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 10³Hz oscillator. Options:
  A) 39.0$\mathrm{\Omega }$
  B) 122.5$\mathrm{\Omega }$
  C) 245.0$\mathrm{\Omega }$
  D) 39000.0$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 13: A saturated vapour pressure of a liquid increases when the Options:
  A) Temperature of a liquid increases
  B) Volume of the liquid increases
  C) Volume of the liquid decreases
  D) Temperature of the liquid decreases
  Show Answer
  The correct answer is A .
• Question 14: A quantity of gas occupies a certain volume when the temperature is -73^oC and the pressure is 1.5 atmospheres. If the pressure is increased to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas? Options:
  A) 573^oC
  B) 327^oC
  C) 300^oC
  D) 110^oC
  E) 27^oC
  Show Answer
  The correct answer is E .
• Question 15: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 16: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 17: A body of mass 4kg is acted on by a constant force of 12N for 3 seconds. The kinetic energy gained by the body at the end of the time is Options:
  A) 144J
  B) 162J
  C) 81J
  D) 72J
  Show Answer
  The correct answer is B .
• Question 18:

  A transverse wave is applied to a string whose mass per unit length is 3 x 10^-2kgm^-1. If the string is under a tension 12N, the speed of the propagation of the wave is

  Options:
  A) 5 ms^-1
  B) 20 ms^-1
  C) 30 ms^-1
  D) 40 ms^-1
  Show Answer
  The correct answer is B .
• Question 19: If I is the current passing through a metallic resistor and H is the rate of Heat generated in the resistor at a constant temperature, then Options:
  A) H $\alpha$ $\frac{1}{I}$
  B) H $\alpha$ $\frac{1}{I^2}$
  C) H $\alpha$ $\sqrt{1}$
  D) H $\alpha$ I²
  E) none of the above
  Show Answer
  The correct answer is D .
• Question 20:

  When the temperature of a liquid increases,its surface tension

  Options:
  A) decreases
  B) increases
  C) remains constant
  D) increases then decreases
  Show Answer
  The correct answer is A .