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 971: Before starting a journey, the tyre pressure of a car was 3 x 10⁵Nm^-2 at 27^oC. At the end of the journey, the pressure rose to 4 x 10⁵Nm^-2. Calculate the temperature of the tyre after the journey, assuming the volume is constant Options:
  A) 400^oC
  B) 300^oC
  C) 273^oC
  D) 127^oC
  Show Answer
  The correct answer is D .
• Question 972: Which of the following devices are used to measure pressure? i. Aneroid barometer. ii. hydrometer. iii. hygrometer. iv. manometer. Options:
  A) i and iii
  B) ii and iii
  C) iii and iv
  D) i and iv
  Show Answer
  The correct answer is D .
• Question 973: What is the angular magnification of a telescope having objective and eyepiece lenses of a focal lengths 30cm and 3cm respectively? Options:
  A) 60
  B) 10
  C) 30
  D) 90
  Show Answer
  The correct answer is B .
• Question 974:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 975: Lodestone is a natural magnet, it points at Options:
  A) N – W when suspended freely
  B) N–S when suspended freely
  C) S – E when suspended freely
  D) S–W when suspended freely
  Show Answer
  The correct answer is B .
• Question 976: An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction.
  [g = 10 ms^-2] Options:
  A) 0.8
  B) 0.4
  C) 1.0
  D) 0.6
  Show Answer
  The correct answer is D .
• Question 977:

  The distance between an object and its real image in a convex lens is 40cm. If the magnification of the image is 3, calculate the focal length of the lens

  Options:
  A) 6.5 cm
  B) 7.5 cm
  C) 8.5 cm
  D) 4.5 cm
  Show Answer
  The correct answer is B .
• Question 978: Radio carrier waves are generated by causing electrons to oscillate rapidly in Options:
  A) a microphone
  B) a television camera
  C) an antenna
  D) coaxial cables
  E) a transmitter
  Show Answer
  The correct answer is E .
• Question 979: A train has an initial velocity of 44ms^-1 and an acceleration of -4ms^-1. Its velocity after 10 seconds is Options:
  A) 2ms^-1
  B) 4ms^-1
  C) 8ms^-1
  D) 12ms^-1
  E) 16ms^-1
  Show Answer
  The correct answer is B .
• Question 980:

  A hydrometer is an instrument formeasuring the

  Options:
  A) a depth of water of water in a vessel
  B) relative density of a liquid by the method of flotation
  C) relative density of a liquid by finding the apparent loss in weight
  D) relative humidity of the air
  Show Answer
  The correct answer is B .