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: 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 2: The image obtained on the screen of a pin-hole camera becomes less sharply defined when the Options:
  A) object is moved farther from the pin-hole
  B) screen is moved farther from the pin-hole
  C) object is made smaller
  D) illumination is made more intense
  E) pin-hole is made larger.
  Show Answer
  The correct answer is E .
• Question 3: an electric cell with nominal voltage E has a resistance of 3Ω connected across it. If the voltage falls to 0.6E, the internal resistance of the cell is Options:
  A) 1Ω
  B) 2Ω
  C) 3Ω
  D) 4Ω
  Show Answer
  The correct answer is C .
• Question 4: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 5: the ratio of the linear expansivity of copper to that of iron is approximately 1.5. A specimen of iron and a specimen of copper expands by the same amount per unit rise in temperature. The ratio of their length is Options:
  A) 3
  B) 1.5
  C) 1.32
  D) 1
  E) 0.67
  Show Answer
  The correct answer is E .
• Question 6: A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave. Options:
  A) 1.3 × 10²m
  B) 3.0 × 10²m
  C) 2.4 × 10²m
  D) 5.0 × 10²m
  E) 7.5 × 10²m
  Show Answer
  The correct answer is E .
• Question 7: A satellite is in a parking orbit if its period is Options:
  A) less than the period of the earth
  B) more than the period of the earth
  C) equal to the period of the earth
  D) the square of the period of the earth
  Show Answer
  The correct answer is C .
• Question 8: The absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The refractive index at the interface when a ray travels from water to glass is Options:
  A) $\frac{1}{2}$
  B) $\frac{8}{9}$
  C) $\frac{9}{8}$
  D) $\frac{17}{12}$
  E) 2
  Show Answer
  The correct answer is C .
• Question 9:

  The equation of a wave travelling along the positive x-direction is given by;

  Y = 0.25 x 10^-3 sin (500t - 0.025x).

  Determine the angular frequency of the wave motion.

  Options:
  A) 0.25 x 10^-3rad s^-1
  B) 0.25 x 10^-1rad s^-1
  C) 5.00 x 10²rad s^-1
  D) 2.50 x 10³rad s^-1
  Show Answer
  The correct answer is C .
• Question 10:

  A reservoir is filled with liquid of density 2000 kgm${}^{-1}$. Calculate the depth at which the pressure in the liquid will be equal to 9100 Nm${}^{-2}$ (g = 10 ms${}^{-2}$)

  Options:
  A) 0.262 m
  B) 0.664 m
  C) 0.819 m
  D) 0.455 m
  Show Answer
  The correct answer is D .