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 1321:

  

  A particle is injected perpendicularly into an electric field, it travels along a curved path as depicted in the image above,the particle is

  Options:
  A) gamma ray
  B) electron
  C) neutron
  D) proton
  Show Answer
  The correct answer is B .
• Question 1322:
  

  A 200 kg load is raised using a 110 m long lever as shown in the diagram above. The load is 10m from the pivot P. If the efficiency of the the lever is 80%, find the effort E required to lift the load.

  [Take g = 10ms-2]

  Options:
  A) 250
  B) 300
  C) 450
  D) 200
  Show Answer
  The correct answer is A .
• Question 1323:

  I. They should be identical

  II. They should originate from the same source.

  III. They should be coherent.

  IV. They should be monochromatic.

  From the statements above, the conditions for two waves to interfere are?

  Options:
  A) I,II and III only
  B) I, III and IV only
  C) II, III and IV only
  D) I, II, III and IV
  Show Answer
  The correct answer is B .
• Question 1324: An electric water pump rate 1.5 kW, lifts 200kg of water through a vertical height of 6 meters in seconds. What is the efficiency of the pump? [g = 10ms^-2, neglecting air resistance] Options:
  A) 90.0%
  B) 85.0%
  C) 80.0%
  D) 65.0%
  Show Answer
  The correct answer is C .
• Question 1325:

  Which of the following is an example of a couple?

  Options:
  A) All of the above.
  B) The forces that are applied to the handle of a screwdriver when you twist it.
  C) The forces that are applied to a cross wench to loosen or tighten the lug nuts on a wheel of a car.
  D) The forces that are applied to the steering wheel of a car when you turn it.
  Show Answer
  The correct answer is A .
• Question 1326:

  A parallel plate capacitor separated by an air gap is made of $0.8m^2$tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

  Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

  Options:
  A) 3.54nC
  B) 42.5nC
  C) 35.4nC
  D) 4.25nC
  Show Answer
  The correct answer is B .
• Question 1327: The distance xm travelled by a particle in time t seconds is described by the equation x = 10 + 12t², Find the average speed of the particle between the time interval t = 2s and t = 5s Options:
  A) 60 ms^-1
  B) 72 ms^-1
  C) 84 ms^-1
  D) 108 ms^-1
  Show Answer
  The correct answer is B .
• Question 1328:

  The lower fixed part of a faulty thermometer reads 2°C while the upper fixed point is 100°C.

  What is the true temperature when the thermometer reads 51°C?

  Options:
  A) 52°C
  B) 50°C
  C) 49°C
  D) 46°C
  Show Answer
  The correct answer is B .
• Question 1329: When ${}_{82}^{210}Pb$ decays to ${}_{80}^{206}Pb$, it emits Options:
  A) two alpha and two beta particles
  B) an alpha particle
  C) one beta particle
  D) one alpha and one beta particle
  Show Answer
  The correct answer is B .
• Question 1330:

  A magnet relay is a device used for?

  Options:
  A) reading the magnitude of magnetic flux
  B) controlling another circuit carrying larger current
  C) turning in sports
  D) storing magnetic field
  Show Answer
  The correct answer is B .