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 1411: Find the work done in moving a 2 C charge between two points X and Y in an electric field if the potential difference is 100 volts Options:
  A) 50J
  B) 100J
  C) 200J
  D) 400J
  Show Answer
  The correct answer is C .
• Question 1412: What is the velocity of sound at 100 ^oC if the velocity of sound at 0 ^oC is 340ms ^-1? Options:
  A) 497m^-1
  B) 440m^-1
  C) 397m^-1
  D) 240m^-1
  Show Answer
  The correct answer is B .
• Question 1413: The difference between X-rays and gamma rays is that Options:
  A) x-rays are more penetrating than gamma rays
  B) x-rays are electromagnetic radiations while gamma rays are negatively charged radiation
  C) x-rays have higher frequencies than gamma rays
  D) x-rays arise from energy changes in the electronic structure of atoms while gamma rays come from the nucleus
  Show Answer
  The correct answer is D .
• Question 1414: Which of the following instruments has a pure tone? Options:
  A) guitar
  B) vibrating strings
  C) tuning fork
  D) siren
  Show Answer
  The correct answer is C .
• Question 1415: When a ball rolls on a smooth level ground, the motion of its center is Options:
  A) translational
  B) oscillatory
  C) random
  D) rotational
  Show Answer
  The correct answer is A .
• Question 1416:

  A source of sound produces waves in air of wavelength1.65m. If the speed of soundin air is 330ms${}^{-1}$, the period of vibration in air is?

  Options:
  A) 200
  B) 0.005
  C) 0.5
  D) 0.02
  Show Answer
  The correct answer is B .
• Question 1417:

  The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

  Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 1418: The percentage of the original nuclei of the sample of a radioactive substance left after 5 half - lives is Options:
  A) 8%
  B) 5%
  C) 3%
  D) 1%
  Show Answer
  The correct answer is C .
• Question 1419: One end of a long wire is fixed while a vibrator is attached to the other end. When the vibrator is energized, the types of waves generated in the wire are Options:
  A) stationary and longitudinal
  B) stationary and transverse
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is C .
• Question 1420:

  If the frequency of an emitted x-ray is 1.6 x 10${}^{16}$Hz, the accelerating potential is?

  [e = 1.6 x 10${}^{-19}$J, h = 6.63 x 10-${}^{34}$Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .