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: A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is Options:
  A) 1.5%
  B) 1.1%
  C) 0.4%
  D) 0.1%
  Show Answer
  The correct answer is B .
• Question 652: 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 653:

  A piece of substance of specific heatcapacity 450Jkg${}^{-1}$k${}^1$ falls through a vertical distance of 20m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10ms${}^{-2}$]

  Options:
  A) $\frac{2}{9}$ºC
  B) $\frac{4}{9}$ºC
  C) $\frac{9}{2}$ºC
  D) $\frac{9}{4}$ºC
  Show Answer
  The correct answer is B .
• Question 654: The pitch of a sound note depends on Options:
  A) timbre
  B) frequency
  C) harmonics
  D) quality
  Show Answer
  The correct answer is B .
• Question 655: The note produced by a stretched string has a fundamental frequency of 400Hz. If the length of the string is doubled while the tension in the string is increased by a factor of 4, the frequency is Options:
  A) 200Hz
  B) 400Hz
  C) 800Hz
  D) 1600Hz
  Show Answer
  The correct answer is B .
• Question 656:

  A body starts from rest and moves with uniform acceleration of 6ms^-2. What distance does it cover in the third seconds

  Options:
  A) 15m
  B) 18m
  C) 27m
  D) 30m
  Show Answer
  The correct answer is A .
• Question 657: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 658: A waterfall is 6.30m high. What is the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall? (Neglect heat losses to the surroundings, take g as 10 ms^-2 and specific heat capacity of weather as 4200,J kg^-1K^-1 Options:
  A) 0.15°C
  B) 1.50°C
  C) 15.00°C
  D) 21.00 °C
  E) 50.00°C
  Show Answer
  The correct answer is B .
• Question 659:

  

  The total power drawn from the cell in the circuit above is

  Note: The cell voltage is 12V and all three resistors are 4 ohm resistors.

  Options:
  A) 12W
  B) 24W
  C) 32W
  D) 40W
  Show Answer
  The correct answer is B .
• Question 660:

  Tha mass of a proton is approximately equal to that of

  Options:
  A) an $\alpha$-particle
  B) a $\beta$-Particle
  C) a neutron
  D) an electron
  Show Answer
  The correct answer is C .