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 721:

  

  The diagram above shows a meter bridge in which two of thee arms contain resistances R and 2Ω. A balance point is obtained at 60cm from the left end , calculate the value of R

  Options:
  A) 1.2Ω
  B) 1.3Ω
  C) 3.0Ω
  D) 6.0Ω
  Show Answer
  The correct answer is C .
• Question 722: The process whereby a liquid turns spontaneously into vapour is called? Options:
  A) regelation
  B) sublimation
  C) boiling
  D) evaporation
  Show Answer
  The correct answer is D .
• Question 723: The energy contained in a wire when it extended by 0.02m by a force 500 N is Options:
  A) 5J
  B) 10J
  C) 10³J
  D) 10⁴
  Show Answer
  The correct answer is A .
• Question 724: PHCN measures its electrical energy in Options:
  A) W
  B) KWh
  C) Wh
  D) J
  Show Answer
  The correct answer is B .
• Question 725: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 726: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 727: Water does not drop through an open umbrella of silk materials unless the inside of the umbrella is touched. This is due to Options:
  A) capilarity
  B) osmotic pressure
  C) viscosity
  D) surface tension
  Show Answer
  The correct answer is D .
• Question 728: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 729: In sunlight, a blue flower looks blue because we see the flower by the light it Options:
  A) recieves from our eye
  B) disperses
  C) absorbs
  D) refracts
  E) reflects
  Show Answer
  The correct answer is E .
• Question 730: The time t₁, t₂ and t₃ for 20 complete oscillations of a simple pendulum experiment are 32.0s, 34.6s and 35.5s respectively. Calculate the mean period of the pendulum. Options:
  A) 1.60s
  B) 1.70s
  C) 1.73s
  D) 1.78s
  E) 5.11s
  Show Answer
  The correct answer is B .