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 2091: It is observed that water will wet a clean glass because the Options:
  A) cohesion of water to glass is stronger than the cohesion of water molecules
  B) adhesion of water molecules is weaker than the cohesion of water to glass
  C) cohesion of water to glass is weaker than the cohesion of water molecules
  D) adhesion of water molecules is stronger than the cohesion of water molecules
  Show Answer
  The correct answer is D .
• Question 2092:

  A lead bullet of mass 0.05kg is fired with a velocity of 200ms${}^{-1}$ into a block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is?

  Options:
  A) 50J
  B) 100J
  C) 150J
  D) 200J
  Show Answer
  The correct answer is A .
• Question 2093: What is the S.I unit of relative density? Options:
  A) kg m^-2
  B) kg m²
  C) kg cm³
  D) has no S.I unit
  Show Answer
  The correct answer is D .
• Question 2094:

  

  The total resistance measured at PQ in the diagram above is

  Options:
  A) 18.0Ω
  B) 11.0Ω
  C) 4.0Ω
  D) 2.0Ω
  Show Answer
  The correct answer is C .
• Question 2095:

  

  In the circuit diagram above , the ammeter reads a current of 3A when R is 5Ω and 6A when R is 2Ω. Determine the value of x

  Options:
  A) 8Ω
  B) 2Ω
  C) 10Ω
  D) 4Ω
  Show Answer
  The correct answer is C .
• Question 2096: Which of the following pairs of colours gives the widest separation in the spectrum of white light? Options:
  A) Red and Violet
  B) Green and Yellow
  C) Red and Indigo
  D) Yellow and Violet
  Show Answer
  The correct answer is A .
• Question 2097: Flourescent tubes produces light by the Options:
  A) excitation of gas molecules
  B) conduction of solar energy
  C) refraction of light by gas molecules
  D) thermal agitation of electron in the tubes
  Show Answer
  The correct answer is A .
• Question 2098: Which of the following statements is (are) NOT true about the emission of the photoelectrons from metallic surfaces? i. all metallic surfaces emits the same number of photoelectrons in a given light ii. most metallic surfaces emit the same number of photoelectrons in visible and infra-red light iii. a metallic surface emits photoelectrons only if the frequency of the incident light is higher than its own characteristics threshold frequency Options:
  A) i only
  B) ii only
  C) i and ii
  D) ii and iii
  E) iii only
  Show Answer
  The correct answer is E .
• Question 2099: As the pressure of a fluid increases, its viscosity Options:
  A) decreases
  B) increases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is B .
• Question 2100:

  

  The diagram above is the heating curve for a solid QR is the

  Options:
  A) melting region
  B) boiling region
  C) sublimation region
  D) evaporating process
  Show Answer
  The correct answer is A .