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 1:

  The refractive index of a liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10${}^{8}m{s}^{-1}$, the velocity of light in the liquid is

  Options:
  A) 1.5 x 10${}^{8}m{s}^{-1}$
  B) 2.0 x 10${}^{8}m{s}^{-1}$
  C) 3.0 x 10${}^{8}m{s}^{-1}$
  D) 4.5 x 10${}^{8}m{s}^{-1}$
  Show Answer
  The correct answer is B .
• Question 2:

  The volume of 0.354g of helium at 273°C and 114cm of mercury pressure is 2667cm${}^3$. Calculate the volume

  Options:
  A) 2000.25 cm${}^3$
  B) 200.025 cm${}^3$
  C) 4003.27 cm${}^3$
  D) 2010.25 cm${}^3$
  Show Answer
  The correct answer is B .
• Question 3:

  

  In the diagram above, a ray of light passes from glass into air, if the angle of incidence in glass is $\alpha$ and angle of refraction in air is $\beta$ which of following statements is true???

  Options:
  A) $\alpha =\beta$
  B) the efractive index of glass is $\frac{sin\theta }{sin\alpha }$
  C) The ray suffers total internal reflection if $\beta$ is greater than the critical angle
  D) the refractive index of glass is $\frac{sin\alpha }{sin\beta }$
  Show Answer
  The correct answer is D .
• Question 4: The external parts of an object can be measure accurately through the use of which scientific instrument? Options:
  A) Micrometer screw gauge
  B) Vernier Caliper
  C) Meter rule
  D) None of the instrument
  Show Answer
  The correct answer is A .
• Question 5: A motor vehicle is brought to rest from a speed of 15ms^-1 in 20 seconds. Calculate the retardation. Options:
  A) 0.75ms^-1
  B) 1.33ms^-2
  C) 5.00ms^-2
  D) 7.50ms^-2
  Show Answer
  The correct answer is A .
• Question 6: As a positively charge rod is brought nearer to the top cap of a positively charged gold leaf electroscope, the divergence of the leaves will Options:
  A) decrease to zero
  B) steadily increase
  C) decrease to zero and then increase
  D) remain constant
  E) increase to a maximum and then decrease
  Show Answer
  The correct answer is B .
• Question 7:

  The Earth's magnetic equator passes through Jos in Nigeria. At Jos, the

  Options:
  A) angle of variation is zero
  B) magnetic declination is 90
  C) angle of dip is zero
  D) horizontal component at the Earth's field is zero
  Show Answer
  The correct answer is C .
• Question 8: Any line or section through an advancing wave in which all the particles are in the same phase is called the Options:
  A) wave lenght
  B) wave crest
  C) wave trough
  D) wave amplitude
  E) wave front
  Show Answer
  The correct answer is E .
• Question 9:

  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 10: A pressure cooker saves both time and fuel in cooking because inside the cooker, the Options:
  A) boiling point of water is raised
  B) pressure is constant
  C) heat is completely trapped
  D) temperature is evenly distributed
  E) volume of steam varies
  Show Answer
  The correct answer is A .