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 2131:

  If 16mA of current flows through a conductor in one second, the number of electron transported per seconds is

  [1 electronic charge = 1.6 x 10^-19C]

  Options:
  A) 1.00 x 10²⁰
  B) 2.56 x 10^-18
  C) 2.56 x ^-17
  D) 1.00 x 10¹⁷
  Show Answer
  The correct answer is D .
• Question 2132: 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 2133: The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms^-1 the depth of the sea is Options:
  A) 6000m
  B) 3000m
  C) 1500m
  D) 375m
  Show Answer
  The correct answer is B .
• Question 2134: Which of the following properties of matter CANNOT be utilized for temperature measurement? The Options:
  A) length of a liquid column
  B) volume of a gas at constant pressure
  C) pressure of a gas at constant volume
  D) resistance of a metallic wire
  E) current produced in a photoelectric effect
  Show Answer
  The correct answer is E .
• Question 2135: A vapour is said to be saturated when Options:
  A) moer molecules return to the liquid than leave it
  B) a dynamic equilibrium exists between the liquid molecules and the vapour molecules at a given temperature
  C) the vapour pressure is atmospheric
  D) the temperature of the vapour varies
  E) all molecules are moving with the same speed
  Show Answer
  The correct answer is B .
• Question 2136: A quantity of sungas at -133 occupies 1/3m³ under pressure 1.4 x 10⁵ Nm^-2. if the gas occupies 31 m^-2 at 37^oC, its pressure will be Options:
  A) 1.26 x 10³Nm^-2
  B) 3.3 x10⁴Nm^-2
  C) 1.35 x 10⁴Nm^-2
  D) 2.2 x 10⁴Nm^-2
  E) 10⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 2137: Momentum and Kinetic energy are conserved in Options:
  A) Inelastic collision
  B) Elastic collision
  C) Explosion
  D) Spacecraft
  Show Answer
  The correct answer is B .
• Question 2138: In a gas experiment, the pressure of the gas is plotted against the reciprocal of the volume of the gas at a constant temperature. the unit of the slope of the resulting curve is Options:
  A) force
  B) force/m
  C) work
  D) force/m³
  E) energy/m³
  Show Answer
  The correct answer is C .
• Question 2139:

  The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20º and 80ºC respectively is?

  Options:
  A) 3.0 x 10${}^2$km${}^{-1}$
  B) 3.0 x 10${}^3$km${}^{-1}$
  C) 5.0 x 10${}^3$km${}^{-1}$
  D) 3.0 x 10${}^4$km${}^{-1}$
  Show Answer
  The correct answer is B .
• Question 2140:

  Any line or section taken through an advancing wave in which all the particles are in the same phase is called the

  Options:
  A) wavelength
  B) wave coast
  C) wave trough
  D) wave front
  Show Answer
  The correct answer is D .