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 451: An object is placed 15cm in front of a concave mirror of radius 40cm. The image formed Options:
  A) virtual and 60cm behind the mirror
  B) real and 60cm behind the mirror
  C) virtual and at infinity
  D) real and at infinity
  E) virtual and 40cm from the mirror
  Show Answer
  The correct answer is A .
• Question 452: Which of the following is a derived unit? Options:
  A) Kilogramme
  B) Meter
  C) Kelvin
  D) Newton
  Show Answer
  The correct answer is D .
• Question 453:

  The near point of a patient's eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away?

  Options:
  A) 2 diopters
  B) 2.5 diopters
  C) 0.5 diopters
  D) 3 diopters
  Show Answer
  The correct answer is A .
• Question 454: A small metal ball thrown vertically upwards from the top of a tower with an initial velocity of 20ms^-1. If the ball took a total of 6s to reach ground level, determine the height of the tower [g = 10ms^-2] Options:
  A) 60m
  B) 80m
  C) 100m
  D) 120m
  Show Answer
  The correct answer is A .
• Question 455:

  A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  Options:
  A) no charge and a zero potential
  B) a positive charge and a zero potential
  C) a negative charge and a positive potential
  D) a negative charge and a negative potential
  Show Answer
  The correct answer is D .
• Question 456: If the fraction of the atoms of a radioactive material left after 120years is 1/64, what is the half-life of the material? Options:
  A) 24 years
  B) 20 years
  C) 10 years
  D) 2 years
  Show Answer
  The correct answer is B .
• Question 457: A pipe of length 45cm is closed at the end. Calculate the fundamental frequency of the sound wave generated in the pipe if the velocity of sound in air is 360ms^-1 [Neglect end correction] Options:
  A) 5.5Hz
  B) 148.5Hz
  C) 200.0Hz
  D) 550.0Hz
  Show Answer
  The correct answer is C .
• Question 458:

  

  What is the resultant resistance in the circuit given above?

  Options:
  A) 11Ω
  B) 8Ω
  C) 4Ω
  D) 3.6Ω
  E) 4.3Ω
  Show Answer
  The correct answer is B .
• Question 459: If a source of sound is moving, a stationary listener will hear a sound of different frequency. This is called Options:
  A) Doppler effect
  B) Resonance
  C) Ultra sound
  D) Diffraction of sound
  E) Rarefaction
  Show Answer
  The correct answer is A .
• Question 460: Heat losses to the surrounding is possible through the following except Options:
  A) Conduction
  B) Convection
  C) Radiation
  D) Expansion
  Show Answer
  The correct answer is D .