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 651:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 652: A lamp is rated 240V, 60W. The resistance of the filament is Options:
  A) 960$\mathrm{\Omega }$
  B) 16$\mathrm{\Omega }$
  C) 15$\mathrm{\Omega }$
  D) 4$\mathrm{\Omega }$
  Show Answer
  The correct answer is A .
• Question 653: Evaporation of a liquid produces cooling of the liquid because the Options:
  A) attraction between the vapour molecules and the liquid molecules is great
  B) average kinetic energy of the liquid is reduced
  C) density of the liquid decreases
  D) vapour pressure above the liquid rises
  E) volume of the liquid decreases
  Show Answer
  The correct answer is B .
• Question 654:

  Particles of mass 10${}^{-2}$kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad${}^{-1}$. If the radius of the blade is 0.2m, the centripetalforce is?

  Options:
  A) 2N
  B) 20N
  C) 200N
  D) 400N
  Show Answer
  The correct answer is B .
• Question 655: Two balls X and Y weighing 5 g and 50 kg respectively were throne up vertically at the same time with a velocity of 100 ms¹ .How will their positions be one second later? Options:
  A) X and Y will be 500 m from each other
  B) Y will be 500 m ahead of X
  C) X will be 500 m ahead of Y
  D) X and Y both be 500 m from the poin of throw
  Show Answer
  The correct answer is D .
• Question 656: The area under a force-distance graph represents Options:
  A) acceleration
  B) velocity
  C) power
  D) work
  E) momentum
  Show Answer
  The correct answer is D .
• Question 657: A transformer has a primary coil with 500 turns and a secondary coil with 2500 turns. When the voltage input to the primary coil is 120V, the output is Options:
  A) 6000V
  B) 600V
  C) 240V
  D) 60V
  E) 24V
  Show Answer
  The correct answer is B .
• Question 658: 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 659:

  The inner diameter of a test tube can be measured accurately using a?

  Options:
  A) micrometer screw gauge
  B) pair of dividers
  C) meter rule
  D) pair of vernier calipers
  Show Answer
  The correct answer is D .
• Question 660: Given that young's modulus for aluminium is 7.0 x 10¹⁰Nm^-2 and density is 2.7 x 10³kgm^-3 find the speed of the sound produced if a solid bar is struck at one end with a hammer Options:
  A) 5.1 x 10³ms^-1
  B) 4.2 x 10³ms^-1
  C) 3.6 x 10³ms^-1
  D) 2.8 x 10³ms^-1
  Show Answer
  The correct answer is A .