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: An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms^-1 at a height of 10m. calculate its initial kinetic energy at the ground level.[g = 10ms^-2, neglect air resistance] Options:
  A) 10 J
  B) 20 J
  C) 30 J
  D) 50 J
  Show Answer
  The correct answer is C .
• Question 2:

  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 3:
  

  From the diagram above, if the potential difference across the resistor, capacitor and inductor are 60V, 120V and 30V respectively, the effective potential difference is

  Options:
  A) 81
  B) 67
  C) 59
  D) 73
  Show Answer
  The correct answer is B .
• Question 4:

  Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

  Options:
  A) formation of hydrogen bubbles on the electrode
  B) increase in the resistance of the cell
  C) local action
  D) polarization
  Show Answer
  The correct answer is C .
• Question 5: 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 6: The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 ⁶m²is?
  [Resistivity of the wire = 4 x 10^-7 Ω m] Options:
  A) 5.0 Ω
  B) 0.5 Ω
  C) 10.0 Ω
  D) 1.0 Ω
  Show Answer
  The correct answer is D .
• Question 7: Which of the following is not a mechanical wave? Options:
  A) wave in closed pipe
  B) radio waves
  C) water waves
  D) sound waves
  Show Answer
  The correct answer is B .
• Question 8:

  

  If a ray traveling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as

  Options:
  A) $\frac{\cos \beta }{\sin \alpha }$
  B) $\frac{\cos \alpha }{\sin \beta }$
  C) $\frac{\sin \alpha }{\sin \beta }$
  D) $\frac{\sin \beta }{\sin \alpha }$
  Show Answer
  The correct answer is B .
• Question 9:

  An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level,calculate the energy at the third level.

  [h = 6.6 x 10^-34Js; f = 10¹⁵Hz]

  Options:
  A) 1.41eV
  B) 1.71eV
  C) 1.61eV
  D) 1.51eV
  Show Answer
  The correct answer is D .
• Question 10: An electric bell operated within an evacuated bell jar enables us to infer correctly that Options:
  A) light waves require a medium for transmission
  B) sound waves do not require a medium for transmission
  C) light waves do not require a medium for transmission but sound waves do
  D) light waves travel much faster than sound waves
  E) light waves and sound waves travel at the same speed
  Show Answer
  The correct answer is C .