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:

  

  In the circuit above, The potential across each capacitor is 100V. The total energy stored in the two capacitors is

  Options:
  A) 3.0 x 10⁴J
  B) 3.0 x 10²J
  C) 2.5 x 10^-2J
  D) 6.0 x 10^-3J
  Show Answer
  The correct answer is C .
• Question 442: A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 10³N, calculate the speed of the bullet just before it hits the wooden block. Options:
  A) 450ms^-1
  B) 400ms^-1
  C) 300ms^-1
  D) 250ms^-1
  Show Answer
  The correct answer is C .
• Question 443:

  The terminals of a battery of emf 24.0 V and internal resistance of 1.0 Ω is connected to an external resistor 5.0 Ω. Find the terminal p.d.

  Options:
  A) 18.0V
  B) 12.0V
  C) 16.0V
  D) 20.0V
  Show Answer
  The correct answer is D .
• Question 444: The bond between silicon and germanium is Options:
  A) dative
  B) covalent bond
  C) trivalent
  D) ionic
  Show Answer
  The correct answer is B .
• Question 445:

  

  The diagram above shows a magnet X with its south pole moved along a soft - iron bar PQ in the direction shown. After some time, the poles at P and Q respectively are

  Options:
  A) North - North
  B) North - South
  C) South - North
  D) South - South
  Show Answer
  The correct answer is B .
• Question 446: The pair of physical quantities that are scalar only are ? Options:
  A) volume and area
  B) moment and momentum
  C) length and displacement
  D) Impulse and time
  Show Answer
  The correct answer is A .
• Question 447:
  

  The effect of closing the key K in the circuit shown in the figure above would be to?

  Options:
  A) increase the current by 0.4A
  B) reduce the current by 0.4A
  C) increase the current by 0.6A
  D) reduce the current by 0.6A
  Show Answer
  The correct answer is A .
• Question 448: In which of the following are the substance arranged in descending order of their thermal conductivities? Options:
  A) copper, steel, glass
  B) steel, copper, glass
  C) steel, glass, copper
  D) copper, glass, steel
  Show Answer
  The correct answer is A .
• Question 449: The physical properties of sound waves can best be described by Options:
  A) reflection and diffraction
  B) polarization and reflection
  C) polarization and diffraction
  D) polarization and refraction
  Show Answer
  The correct answer is A .
• Question 450: The electrochemical equivalent of a metal is 1.3 x 10^-7kgC^-1. The mass of the metal which 2.0 x 10⁴C of electricity will deposit from a suitable electrolyte is Options:
  A) 6.5 x 10^-2kg
  B) 2.6 x 10^-2kg
  C) 6.5 x 10^-3kg
  D) 2.6 x 10^-3kg
  Show Answer
  The correct answer is D .