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 531:

  Which of the following materials is a good insulator?

  Options:
  A) Silver
  B) Water
  C) Rubber
  D) Copper
  Show Answer
  The correct answer is C .
• Question 532: It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the Options:
  A) Crompton effect
  B) de Broglie’s laws
  C) Frank-Hertz experimental law
  D) Heisenberg’s uncertainly principle
  E) wave-particle paradox
  Show Answer
  The correct answer is D .
• Question 533: The refractive index of liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10⁸ms^-1, the velocity of light in the liquid is Options:
  A) 1.5 x 10⁸m^-1
  B) 2.0 x 10⁸m^-1
  C) 3.0 x 10⁸m^-1
  D) 4.5 x 10⁸m^-1
  E) 9.0 x 10⁸m^-1
  Show Answer
  The correct answer is B .
• Question 534: A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is Options:
  A) 25%
  B) 33%
  C) 50%
  D) 75%
  Show Answer
  The correct answer is D .
• Question 535: The plane mirrors in a kaleidoscope are usually placed Options:
  A) at an angle of 60^o
  B) parallel to one another
  C) perpendicular to one another
  D) at an angle of 45^o
  Show Answer
  The correct answer is A .
• Question 536:

  If in a simple pendulum experiment the length of the inextensible string is increased by a factor offour, its period is increased by a factor of?

  Options:
  A) 4
  B) $\frac{\pi }{2}$
  C) $\frac{1}{4}$
  D) 2
  Show Answer
  The correct answer is D .
• Question 537: Which of the following pairs of light rays shows the widest separation in the spectrum of white light? Options:
  A) Yellow and red
  B) Orange and green
  C) Violet and blue
  D) Blue and green
  E) Red and indigo
  Show Answer
  The correct answer is E .
• Question 538:

  

  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 539: The capacitance of a parallel plate capacitor is 20 μf in air and 60 μf in the presence of a dielectric. What is the dielectric constant? Options:
  A) 0.3
  B) 6.0
  C) 3.0
  D) 2.0
  Show Answer
  The correct answer is C .
• Question 540:

  

  In the circuit Shown above, calculate the effective capacitance between X and Y

  Options:
  A) 3/4µF
  B) µ$2\frac{10}{13}\mu F$
  C) 12µF
  D) µ$4\frac{12}{13}\mu F$
  E) 13µF
  Show Answer
  The correct answer is B .