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 2211: Which of the following statements about sound is NOT true? Options:
  A) sound is a longitudinal wave
  B) sound can be reflected and refracted like light
  C) sound travels through a vacuum
  D) sound moves faster in a steel wire than in air
  E) sound can ony be produced by vibrating objects
  Show Answer
  The correct answer is C .
• Question 2212: Which of the following are true about the infra-red radiation? i. it is invisible ii. it is called heat ray iii. its frequency is higher than that of blue light iv. it travels as a transverse wave Options:
  A) i, ii, iii and iv
  B) i, ii, iv only
  C) i, iii, iv only
  D) ii, iii, iv only
  Show Answer
  The correct answer is B .
• Question 2213:

  Tha mass of a proton is approximately equal to that of

  Options:
  A) an $\alpha$-particle
  B) a $\beta$-Particle
  C) a neutron
  D) an electron
  Show Answer
  The correct answer is C .
• Question 2214: Which of the following is NOT an effect that can be produced by an electric current? Options:
  A) heat
  B) light
  C) sound
  D) motion
  E) none of the above
  Show Answer
  The correct answer is E .
• Question 2215:
  

  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 2216: Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm Options:
  A) $\frac{1}{140}$$\pi$
  B) 14$\pi$
  C) 70$\pi$
  D) 140$\pi$
  Show Answer
  The correct answer is D .
• Question 2217: Before starting a journey, the tyre pressure of a car was 3 x 10⁵Nm^-2 at 27^oC. At the end of the journey, the pressure rose to 4 x 10⁵Nm^-2. Calculate the temperature of the tyre after the journey, assuming the volume is constant Options:
  A) 400^oC
  B) 300^oC
  C) 273^oC
  D) 127^oC
  Show Answer
  The correct answer is D .
• Question 2218:

  

  The diagram above shows two wave forms P and Q at a particular instant in time. the two waves will interface

  Options:
  A) destructively to produce a wave of larger amplitude
  B) destructively to produce a wave of smaller amplitude
  C) constructively to produce a wave of larger amplitude
  D) constructively to produce a wave of smaller amplitude
  Show Answer
  The correct answer is C .
• Question 2219: 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 2220:

  Workdone on an object to bring it to a certain point in space is called

  Options:
  A) Gravitational potential energy
  B) Potential energy
  C) Kinetic energy
  D) Mechanical energy
  Show Answer
  The correct answer is A .