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 1311: A dentist obtains a linear magnification of 4 of a hole in a tooth by placing a concave mirror at a distance, of 2.0cm from the tooth. The radius of Curvature of the mirror is Options:
  A) 5.3cm
  B) 3.2cm
  C) 2.7cm
  D) 1.6cm
  Show Answer
  The correct answer is B .
• Question 1312: During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is? Options:
  A) 1.0 g
  B) 0.5 g
  C) 3.0 g
  D) 2.0 g
  Show Answer
  The correct answer is D .
• Question 1313: The force of repulsion between two point positive charges 5$\mu$C and 8$\mu$C separated at a distance of 0.02 map art is. [$\frac{1}{4\pi {\epsilon }_o}$ = 9 x 10⁹Nm²C^-2] Options:
  A) 1.8 x 10^-10N
  B) 9.0 x 10^-8N
  C) 9.0 x 10²N
  D) 4.5 x 10³N
  Show Answer
  The correct answer is C .
• Question 1314: A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms^-1. What is the mass of the material ejected per second? Options:
  A) 81.00kg
  B) 9.00kg
  C) 0.90kg
  D) 0.09kg
  Show Answer
  The correct answer is C .
• Question 1315: A constant force of %n acts for a % seconds on a mass of 5kg initially at rest. Calculate the final momentum Options:
  A) 125kgms−1
  B) 25kgms−1
  C) 15kgms−1
  D) 0kgms−1
  Show Answer
  The correct answer is B .
• Question 1316: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1317: 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 1318: Which of the following statements is true about liquid pressure is NOT correct? The pressure Options:
  A) at a point in a liquid is proportional to the depth
  B) at any point in a liquid is the same at the same level
  C) is exerted equally in all directions at any point
  D) of a liquid at any point on the wall of its container acts in a direction perpendicular to the wall
  E) at a particular depth depends on the shape of the vessel
  Show Answer
  The correct answer is E .
• Question 1319: A vapour is said to be saturated when Options:
  A) more molecules return to the liquid than the amount that left it
  B) a dynamic equilibrium exists between the molecules of the liquid and the vapour molecules at a given temperature
  C) the vapour pressure is equal to the atmospheric pressure
  D) all molecules are moving with the same speed in all directions at a given temperature
  Show Answer
  The correct answer is B .
• Question 1320:

  A boat at anchor is rocked by waves whose crest are 100m apart and whose velocity is 25ms^-1. At what interval does the wave crest reach the boat?

  Options:
  A) 2500.00s
  B) 75.00s
  C) 4.00s
  D) 0.25s
  Show Answer
  The correct answer is C .