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 301:

  If a sound wave goes from a cold air region to a hot air region, its wavelength will?

  Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is A .
• Question 302: In which of the following arrangements is the wavelength in an increasing order? Options:
  A) Gamma rays, infra-red rays, x-rays, radiowaves
  B) Gamma rays, x-rays, infra-red ray, radiowaves
  C) Radiowaves, x-rays, gamma ray, infra-red rays
  D) Infra-red rays, radiowaves, x-rays, gamma rays
  Show Answer
  The correct answer is B .
• Question 303:

  

  The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston

  Options:
  A) both valves are open
  B) P is open while Q is closed
  C) P is closed while Q is open
  D) Both valves are closed
  Show Answer
  The correct answer is B .
• Question 304: If the angle between two vector P and Q is O^o, the vectors are said to Options:
  A) intersect at the angle 45^o
  B) intersect at the angle 60^o
  C) be parallel
  D) be perpendicular
  Show Answer
  The correct answer is C .
• Question 305:

  When the temperature of a liquid is increased, its surface tension

  Options:
  A) increases
  B) decreases
  C) remain constant
  D) increases then decreases
  Show Answer
  The correct answer is B .
• Question 306: Which of the following media allow the transmission of sound wave through them i. Air. ii. Liquids. iii. Solids. Options:
  A) i and ii only
  B) i and iii only
  C) ii and iii only
  D) i,ii and iii
  Show Answer
  The correct answer is D .
• Question 307:

  The potential energy in an elastic string of force constant k, which has an extension X is?

  Options:
  A) kX
  B) KX${}^2$
  C) ½KX${}^2$
  D) ½K
  Show Answer
  The correct answer is C .
• Question 308:

  A given mass of gas has a pressure of 80 Nm${}^{-2}$ at a temperature of 47 C. If the temperature is reduced to 27 C with volume remaining constant, the new pressure is?

  Options:
  A) 46.0 Nm${}^{-2}$
  B) 75.0 Nm${}^{-2}$
  C) 80.0 Nm${}^{-2}$
  D) 85.3 Nm${}^{-2}$
  Show Answer
  The correct answer is B .
• Question 309:

  A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?

  Options:
  A) 3m
  B) 5m
  C) 6m
  D) 10m
  Show Answer
  The correct answer is C .
• Question 310: The voltage of the domestic electric supply is represented by the equation V = 311 sin314.2t. Determine the frequency of the a.c. supply [$\pi$ = 3.142] Options:
  A) 50.0Hz
  B) 100.0Hz
  C) 311.0Hz
  D) 314.2Hz
  Show Answer
  The correct answer is A .