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 101:

  Calculate the absolute pressure at the bottom of a lake at a depth of 32.8 m. Assume the density of the water is 1 x 10^3 kgm-3 and the air above is at a pressure of 101.3 kPa.

  [Take g = 9.8 ms-2]

  Options:
  A) 422.7
  B) 220.14
  C) 464.53
  D) 321.74
  Show Answer
  The correct answer is A .
• Question 102:

  

  In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. The direction of the magnetic field at P due to the current is

  Options:
  A) Upward
  B) North
  C) South
  D) West
  E) East
  Show Answer
  The correct answer is D .
• Question 103: In Faradays law of electrolysis, a graph of the mass deposited against the quantity of electricity is plotted. The slope of the graph gives Options:
  A) the energy released
  B) the electrochemical equivalent
  C) the current flowing
  D) the charge released
  Show Answer
  The correct answer is B .
• Question 104: Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination? Options:
  A) 6.0V, 16Ω
  B) 6.0V, 1Ω
  C) 1.5V, 4Ω
  D) 1.5V, 1Ω
  Show Answer
  The correct answer is D .
• Question 105:

  A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms${}^{-1}$ from the top of a tower 10m high. Neglecting air resistance, its total energyjust before hitting the ground is? (Take g = 10ms${}^{-2}$)

  Options:
  A) 5J
  B) 10J
  C) 15J
  D) 20J
  Show Answer
  The correct answer is C .
• Question 106: The physical properties of sound waves can best be described by Options:
  A) reflection and diffraction
  B) polarization and reflection
  C) polarization and diffraction
  D) polarization and refraction
  Show Answer
  The correct answer is A .
• Question 107: Which of the following machines does NOT apply the lever principle? Options:
  A) claw hammer
  B) wheel barrow
  C) single moving pulley
  D) sugartongs
  E) nutcrackers
  Show Answer
  The correct answer is C .
• Question 108:

  When blue and green colours of light are mixed, the resultant colour is

  Options:
  A) cyan
  B) magenta
  C) black
  D) yellow
  Show Answer
  The correct answer is A .
• Question 109:

  The limiting frictional force between two surface depends on

  I. the normal reaction between the surfaces

  II. the area of surface in contact

  III. the relative velocity between the surfaces

  IV. the nature of the surface

  Options:
  A) I only
  B) I and IV only
  C) II only
  D) III only
  Show Answer
  The correct answer is B .
• Question 110: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .