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 751: A 12V battery has an internal resistance of 0.5W.If a cable of 1.0W resistance is connected across the two terminals of the battery, the current drawn from the battery is Options:
  A) 16.0A
  B) 8.0A
  C) 0.8A
  D) 0.4A
  Show Answer
  The correct answer is B .
• Question 752:

  A quantity of ice at -10°C is heated until the temperature of the heating vessel is 90°C. Which of the following constants is NOT required to determine the quantity of heat supplied to the vessel?

  Options:
  A) Specific latent heat of vaporization
  B) Specific heat capacity of ice
  C) Specific latent heat of fusion
  D) Specific heat capacity of water
  Show Answer
  The correct answer is A .
• Question 753: The spiral spring of a spring balance is 25.0cm long when 5N hangs on it and 30cm long, when the weight is 10N. What is the length of the spring if the weight is 3N assuming Hooke's law is obeyed? Options:
  A) 15.0cm
  B) 17.0cm
  C) 20.0cm
  D) 23.0cm
  Show Answer
  The correct answer is D .
• Question 754: If a mango fruit dropped at a height of 50 meters. How long does it reach the ground? (take g = 10m/s²) Options:
  A) 2 sec
  B) 3 sec
  C) 4sec
  D) 3.2sec
  Show Answer
  The correct answer is D .
• Question 755:

  The amount of heat needed to raise the temperature of 10kg of Copper by 1K is its

  Options:
  A) specific heat capacity
  B) latent heat
  C) heat capacity
  D) internal energy
  Show Answer
  The correct answer is A .
• Question 756:

  A supply of 400V is connected across capacitors of 3μf and 6μf in series. Calculate the charge.

  Options:
  A) 8 x 10${}^{-4}$C
  B) 4 x 10${}^{-2}$C
  C) 8 x 10${}^{-3}$C
  D) 4 x 10${}^{-8}$C
  Show Answer
  The correct answer is A .
• Question 757:

  The number of holes in an intrinsic semiconductor

  Options:
  A) is not equal to the number of free electrons
  B) is greater than the number of free electrons
  C) is equal to the number of free electrons
  D) is less than the number of free electrons
  Show Answer
  The correct answer is C .
• Question 758: A 50W electric heater is used to heat a metal block of mass 5kg. If in 10 minutes a temperature rise of 12^oC is achieved, the specific heat capacity of the metal is Options:
  A) 400 J kg^-1K^-1
  B) 500 J kg^-1K^-1
  C) 390 J kg^-1K^-1
  D) 130 J kg^-1K^-1
  Show Answer
  The correct answer is B .
• Question 759: A stroboscope can be used to make the ware appear ………….. Options:
  A) Stationary
  B) In motion
  C) Dipper
  D) Ripple
  Show Answer
  The correct answer is A .
• Question 760: Which of the following is used for the correction of short sightedness? Options:
  A) convex lens
  B) concave lens
  C) convex mirror
  D) concave mirror
  Show Answer
  The correct answer is B .