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 2021: In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency 480Hz. Neglecting and effect, the velocity of sound in air is Options:
  A) 96ms^-1
  B) 255ms^-1
  C) 340ms^-1
  D) 384ms^-1
  Show Answer
  The correct answer is D .
• Question 2022:

  

  The diagram above shows a balanced metre bridge, the value of x is

  Options:
  A) 75.0 cm
  B) 66.7 cm
  C) 33.3 cm
  D) 25.0 cm
  Show Answer
  The correct answer is C .
• Question 2023: A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is Options:
  A) 0.4eV
  B) 2.5eV
  C) 3.0eV
  D) 7.0eV
  Show Answer
  The correct answer is C .
• Question 2024: The fundamental frequency of a plucked wire under a tension of 400N is 250Hz. When the frequency is changed to 500 Hz at constant length, the tension is Options:
  A) 1600N
  B) 400N
  C) 160N
  D) 40N
  Show Answer
  The correct answer is A .
• Question 2025: The thermometric property of a constant volume thermometer is? Options:
  A) change in volume
  B) differential expanssion
  C) change in pressure
  D) change in length
  Show Answer
  The correct answer is C .
• Question 2026: Two parallel plates at a distance of 8.0 x 10^-3m apart are maintained at a p.d of 600 volts with the negative plate earthed. What is the electric field strength? Options:
  A) 4.8 Vm^-1
  B) 75.0Vm^-1
  C) 4800.0Vm^-1
  D) 75000.0Vm^-1
  Show Answer
  The correct answer is D .
• Question 2027:

  I. Jet propelled aircraft

  II. Rocket propulsion

  III. The recoil of a gun

  IV. A person walking

  Which of the above is based on Newton's third law of motion

  Options:
  A) I and II only
  B) I, II, III, and IV only
  C) I and III only
  D) I, II and III only
  Show Answer
  The correct answer is D .
• Question 2028: Which of the following is a semiconductor Options:
  A) copper
  B) silicon
  C) plastic
  D) Iron
  Show Answer
  The correct answer is B .
• Question 2029: A zinc has a heat capacity of 40 J/K, what is the mass of the zinc, given that the specific heat of zinc is 380 J/kg k Options:
  A) 0.11kg
  B) 0.12kg
  C) 0.13kg
  D) 0.14kg
  Show Answer
  The correct answer is A .
• Question 2030:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .