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 571: It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the Options:
  A) Crompton effect
  B) de Broglie’s laws
  C) Frank-Hertz experimental law
  D) Heisenberg’s uncertainly principle
  E) wave-particle paradox
  Show Answer
  The correct answer is D .
• Question 572: Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted person, close objects appear blurred. ii. for a short sighted person, distant objects appear blurred. iii. short sight is corrected by using a pair of converging lenses. Options:
  A) i only
  B) ii only
  C) i and ii only
  D) ii and iii only
  E) i, ii and iii
  Show Answer
  The correct answer is C .
• Question 573: Which of the following statements is correct about a machine? Options:
  A) Efficiency of a machine is always greater than I
  B) Efficiency decreases with an increase in friction
  C) Velocity ratio depends on friction
  D) Mechanical advantage increases with an increase in friction
  Show Answer
  The correct answer is B .
• Question 574: The production of pure spectrum could easily be achieved using a? Options:
  A) glass prism with a pin
  B) triangular prism with two convex lens
  C) traingular prism only
  D) triangular prism with two concave lenses
  Show Answer
  The correct answer is B .
• Question 575: 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 576: The following are some units i. Ns ii. Mm iii. Nm^-2 iv. J^oK^-1. What are the units of latent heat? Options:
  A) i
  B) ii
  C) iii
  D) iv
  Show Answer
  The correct answer is D .
• Question 577: a ray of light which strikes a glass slab from air at normal incidence passes through the slab Options:
  A) undeviated and undisplaced at a lower speed
  B) deviated and undisplaced at a lower speed
  C) deviated and displaced at a lower speed
  D) undeviated and displaced at a faster speed
  Show Answer
  The correct answer is A .
• Question 578:

  A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is

  Options:
  A) 400N
  B) 200N
  C) 100N
  D) 800N
  Show Answer
  The correct answer is D .
• Question 579: An object 15cm high is 30cm from pin-hole camera. If the height of the image formed at the back of the camera is 10cm, the image distance is Options:
  A) 20cm
  B) 45cm
  C) 54cm
  D) 63cm
  E) 70cm
  Show Answer
  The correct answer is A .
• Question 580: Electricity is supplied to a school along a cable of total resistance 0.5$\mathrm{\Omega }$ with the maximum current drawn from the mains as 100A. The maximum energy dissipated as heat for 1 hr is Options:
  A) 3.6 x 10³J
  B) 5.0 x 10³J
  C) 3.0 x 10⁵J
  D) 1.8 x 10⁷J
  Show Answer
  The correct answer is D .