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 441: A 5-v battery is connected across the plates of a 2.0$\mu$F uncharged parallel plate capacitor. The charge on the capacitor after a long time is Options:
  A) 2.5$\mu$C
  B) 10.0$\mu$C
  C) 20.0$\mu$C
  D) 50.0$\mu$C
  Show Answer
  The correct answer is B .
• Question 442: A vector quantity can only be completely described when ……… and …………are mentioned. Options:
  A) Magnitude and motion
  B) Magnitude and direction
  C) Distance and specified displacement
  D) Moment and momentum
  Show Answer
  The correct answer is B .
• Question 443: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 444: I Electrical potential, II Torque, III Kinetic Energy, IV Momentum. Which of the quantities listed are vectors? Options:
  A) II and IV
  B) I and II
  C) I and III
  D) II and III
  Show Answer
  The correct answer is A .
• Question 445: An atom radiates 1.5 × 10^-19J when an electron jumps from one level to another. What is the wavelength of the emitted radiation? (Planck’s constant 6.6 × l0^-34Js ; Speed of light in vacuum = 3.0 × 108ms^-1) Options:
  A) 1.32 × 10^-6m
  B) 2.97 × 10^-6m
  C) 3.30 × 10^-6m
  D) 6.82 × 10^-6m
  E) 8.01 × 10m^-6
  Show Answer
  The correct answer is A .
• Question 446: A motor boy of a driver saw what seem to appear to be a pool of water a head of him, while his driver’s drives a new truck on a funny day. Which of the following explains his observation? Options:
  A) He saw a flying objects
  B) He must be thinking of water and food
  C) He was seeing the shadow of the car
  D) The sun ray from the sky were passing from a hot air (layer) to cold layer
  Show Answer
  The correct answer is D .
• Question 447:

  

  The diagram above shows the prism arrangement in a

  Options:
  A) Microscope
  B) tereoscope
  C) projector
  D) periscope
  E) gyroscope
  Show Answer
  The correct answer is D .
• Question 448: A man stands in front f a high wall and produces a sound. If he receives the echo of the sound four seconds later, what is his distance from the wall? [The speed of sound in air is 330ms^-1] Options:
  A) 1320m
  B) 660m
  C) 400m
  D) 330m
  E) 165m
  Show Answer
  The correct answer is B .
• Question 449:

  

  From the diagram above, calculate the energy stored in the capacitor

  Options:
  A) 4.0 x 10${}^{-2}$J
  B) 4.0 x 10${}^{-4}$J
  C) 8.0 x 10${}^{-4}$J
  D) 8.0 x 10${}^{-2}$J
  Show Answer
  The correct answer is B .
• Question 450: When an athlete perspires after running, he loses heat through Options:
  A) Evaporation
  B) Conduction
  C) Radiation
  D) Convection
  Show Answer
  The correct answer is A .