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 1911: The particle nature of light is demonstrated by the Options:
  A) photoelectric effect
  B) speed of light
  C) colours of light
  D) diffraction of light
  Show Answer
  The correct answer is A .
• Question 1912: Which of the following instruments has a pure tone? Options:
  A) guitar
  B) vibrating strings
  C) tuning fork
  D) siren
  Show Answer
  The correct answer is C .
• Question 1913:

  The velocities of light in air and glass are 3.0 x 10${}^8$ms${}^{-1}$ and 2.0 x 10${}^8$ms${}^{-1}$ respectively. If the angle of refraction is 30º, the sine of the angle of incidence is?

  Options:
  A) 0.33
  B) 0.50
  C) 0.67
  D) 0.75
  Show Answer
  The correct answer is D .
• Question 1914: Calculate the escape velocity of a satellite launched from the earth's surface if the radius of the earth is 6.4x10⁶m Options:
  A) 25.3kms^-1
  B) 4.2kms^-1
  C) 4.0kms^-1
  D) 11.3kms^-1
  Show Answer
  The correct answer is D .
• Question 1915:

  The refractive index of a liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10${}^{8}m{s}^{-1}$, the velocity of light in the liquid is

  Options:
  A) 1.5 x 10${}^{8}m{s}^{-1}$
  B) 2.0 x 10${}^{8}m{s}^{-1}$
  C) 3.0 x 10${}^{8}m{s}^{-1}$
  D) 4.5 x 10${}^{8}m{s}^{-1}$
  Show Answer
  The correct answer is B .
• Question 1916:

  The number of holes in an intrinsic semiconductor

  Options:
  A) is not equal to the number of free electrons
  B) is greater than the number of free electrons
  C) is equal to the number of free electrons
  D) is less than the number of free electrons
  Show Answer
  The correct answer is C .
• Question 1917:

  

  What is the resultant resistance of the circuit in the image shown?

  Options:
  A) 8Ω
  B) 11Ω
  C) 4Ω
  D) 3.6Ω
  Show Answer
  The correct answer is A .
• Question 1918: A constant force of 40N acting on a body initially at rest gives an acceleration of 0.1ms^-2 for 4s. Calculate the work done by the force Options:
  A) 8J
  B) 10J
  C) 32J
  D) 160J
  Show Answer
  The correct answer is C .
• Question 1919: If the radius of the earth is 6.4 x 10⁶m, the escape velocity of a satellite from the earth is?
  [g = 10 ms^-2] Options:
  A) 1.13 x 10⁴ ms^-1
  B) 9.00 x 10³ ms^-1
  C) 8.00 x 10³ ms^-1
  D) 1.27 x 10⁴ ms^-1
  Show Answer
  The correct answer is A .
• Question 1920:
  

  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 .