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 2301:

  In the molecular explanation of conduction, heat is transferred by the

  Options:
  A) Free electrons
  B) Free atoms
  C) Free molecules
  D) Free solids
  Show Answer
  The correct answer is A .
• Question 2302: A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the Options:
  A) 80%
  B) 75%
  C) 50%
  D) 33%
  Show Answer
  The correct answer is B .
• Question 2303: The quantity (timbre) of sound depends on Options:
  A) amplitude
  B) frequency
  C) harmonics
  D) velocity
  E) wavelength
  Show Answer
  The correct answer is C .
• Question 2304: At different locations on the earth's surface, the earth's magnetic field is Options:
  A) the same in magnitude and direction
  B) the same in magnitude but different in direction
  C) different in both magnitude and direction
  D) different in magnitude but different in direction
  Show Answer
  The correct answer is A .
• Question 2305: Three 3ω resistance are connected in parallel what is the equivalent resistance? Options:
  A) 1ω
  B) 9ω
  C) 3ω
  D) 0.33ω
  Show Answer
  The correct answer is A .
• Question 2306: The temperature at which the water vapour present in the air is just sufficient to saturate it is called the Options:
  A) ice point
  B) boiling point
  C) steam point
  D) dew point
  E) saturation point
  Show Answer
  The correct answer is D .
• Question 2307: The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz? Options:
  A) 7500m
  B) 300m
  C) 75m
  D) 15m
  Show Answer
  The correct answer is B .
• Question 2308: Which of the following operations can be used to convert an alternative current dynamo into a direct current dynamo Options:
  A) number of turns in the coil is increased
  B) strength of the field magnet is increased
  C) slip rings are replaced with split ring cummutator
  D) coil is wound on a soft iron armature
  Show Answer
  The correct answer is C .
• Question 2309: A simple pendulum with a period of 2.0s has its length doubled. Its new period is Options:
  A) 1.00s
  B) 1.41s
  C) 0.3s
  D) 2.83s
  E) 4.00s
  Show Answer
  The correct answer is D .
• Question 2310: An object 0 lies at a distance m in front of concave mirror of focal length f. If m < f, then the final image obtained will be Options:
  A) virtual and diminished
  B) magnified and erect
  C) real and inverted
  D) diminished and erect
  Show Answer
  The correct answer is C .