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 1281: Which of the following statements supports the assumption that light travels in straight lines? Options:
  A) light can be diffracted
  B) a source of light produces distinct shadows of opaque objects
  C) a source of light produces interference patterns on a suitably placed screen
  D) light can be reflected
  Show Answer
  The correct answer is B .
• Question 1282: Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light? Options:
  A) source, slit, converging lens, prism, converging lens, screen.
  B) source, slit, diverging lens, prism, diverging lens, screen.
  C) source, converging lens, prism, diverging lens, screen.
  D) source, slit, prism, diverging lens, converging lens, screen.
  E) source, slit, prism, diverging lens, sreen.
  Show Answer
  The correct answer is A .
• Question 1283: When a number of identical small magnets are arranged in a line, the strength of the resultant magnet Options:
  A) ia largest when they are arranged end to end
  B) is greatest when they are arrangedparallel with like poles adjacent to each other
  C) depends only on the number of magnets provided they arev parallel
  D) is greater when the magnets are arranged on a wooden surface than on a metaln surface
  Show Answer
  The correct answer is A .
• Question 1284:

  If the frequency of an emitted x-ray is 1.6 x 10¹⁶Hz, the accelerating potential is?

  [e = 1.6 x 10^-19C, h = 6.63 x 10^-34Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 1285: When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will Options:
  A) be induced
  B) converge
  C) diverge
  D) remain constant
  Show Answer
  The correct answer is C .
• Question 1286:

  Aluminium is sometimes used as the leaf of an electroscope because it

  Options:
  A) is a light material
  B) is a good conductor
  C) is a good insulator
  D) can be converted into thin sheets
  Show Answer
  The correct answer is D .
• Question 1287: Which of the following statements correctly describe(s) cathode rays? i. they consist of tiny particles carrying negative electric charges. ii. they are deflected in a magnetic field but not in an electric field. iii. they consist of fast moving neutrons and deflected in an electric field. Options:
  A) i only
  B) ii only
  C) i and ii only
  D) ii and iii only
  Show Answer
  The correct answer is A .
• Question 1288:

  An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?

  Options:
  A) 26.25 cm behind the mirror
  B) 10.5 cm behind the mirror
  C) 26.25 cm in front of the mirror
  D) 10.5 cm in front of the mirror
  Show Answer
  The correct answer is A .
• Question 1289: The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be Options:
  A) 3V
  B) 6V
  C) 24V
  D) 48V
  Show Answer
  The correct answer is A .
• Question 1290:

  A lead bullet of mass 0.05 kg is fired with a velocity of 200 ms into a lead block of mass 0.95 kg. Given that the lead block can move freely. the final kinetic energy after impact is

  Options:
  A) 100J
  B) 150J
  C) 50J
  D) 200J
  Show Answer
  The correct answer is C .