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 411: Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths? Options:
  A) Gamma rays, ultraviolet rays, X- rays, infra - red rays
  B) Gamma rays, X-rays, ultraviolet rays, infra-red rays
  C) infra-red rays, ultraviolet rays, X-rays, gamma rays
  D) Gamma rays, ultraviolet rays, infra-red rays, X-rays
  Show Answer
  The correct answer is B .
• Question 412: If the capacitance of an capacitor is C = (εA)/d, which of the following parameters is varied when a variable capacitors is used for tuning radio sets? Options:
  A) constant (ε) and area
  B) area and distance.
  C) constant (ε) only
  D) distance only
  Show Answer
  The correct answer is B .
• Question 413: A hose of cross-sectional area 0.5m² is used to discharge water from a water tanker at a velocity of 60ms^-1 in 20s into a container. If the container is filled completely, the volume of the container is Options:
  A) 240m³
  B) 600m ³
  C) 2400m ³
  D) 6000m³
  Show Answer
  The correct answer is B .
• Question 414:

  

  What is the acceleration of a particle whose motion is graphically displayed in the diagram above

  Options:
  A) 0.67ms^-2
  B) 0.80ms^-2
  C) 0.87ms^-2
  D) 0.92ms^-2
  E) 0.20ms^-2
  Show Answer
  The correct answer is B .
• Question 415: A progressive wave is represented by $y=10\text{Sin}(1000\pi t-\frac{\pi x}{34})$ . two layers of the wave separated by 153cm have a phase difference of Options:
  A) 270⁰
  B) 45⁰
  C) 90⁰
  D) 180⁰
  E) No Correct Option
  Show Answer
  The correct answer is E .
• Question 416: For a short sighted person, light rays from a point on a very distant object is focused Options:
  A) in front of the retina
  B) on the retina by a converging lens
  C) behind the retina by a diverging lens
  D) in front of the retina, a distance 2F from the lens
  Show Answer
  The correct answer is A .
• Question 417: A rectangular tank contains water to a depth of 2m, if the base is 4m x 3m, calculate the force on the base (Density of water = 10³kgm^-3, g = 10ms^-2) Options:
  A) 1.4 x 10²N
  B) 24 x 10⁴N
  C) 2.0 x 10⁴N
  D) 1.7 x 10³N
  Show Answer
  The correct answer is B .
• Question 418: In a wheel and axle mechanism the diameters of the wheel and axle are 40cm and 8cm respectively. Given that the machine is 80% efficient, what effort is required to lift a load of 100N? Options:
  A) 20N
  B) 25N
  C) 50N
  D) 80N
  Show Answer
  The correct answer is B .
• Question 419:

  

  The above figure shows the motion of a progressive wave along a string. The particle motion of the medium is in direction

  Options:
  A) parallel to OX
  B) parallel to OY
  C) 60^o to OX
  D) 60v to OY
  Show Answer
  The correct answer is B .
• Question 420: High Tension(H.T.) transmission means Options:
  A) to transmit a given amount of power, the tension in the conducting wire must be high
  B) heat is not lost when current is passed through a conductor
  C) heat is gained when a given power is transmitted
  D) a big transformer is required to transmit power
  E) trasmission of power at low current and high voltage
  Show Answer
  The correct answer is E .