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 1561: A ray incident on a glass prism undergoes minimum deviation when the Options:
  A) incident angle is equal to the angle of refraction
  B) refraction angle equals 90^o
  C) incident angle equals 90^o
  D) incident angle is equal to the angle of emergence
  Show Answer
  The correct answer is D .
• Question 1562: What happens when three coplanar non-parallel forces are in equilibrium? Options:
  A) Their lines of action are parallel.
  B) They are represented in magnitude only
  C) They are represented in direction only
  D) Their lines of action meet at a point
  Show Answer
  The correct answer is D .
• Question 1563: A string is fastened tightly between two walls 24cm apart. The wavelength of the second overtone is Options:
  A) 24cm
  B) 16cm
  C) 12cm
  D) 8cm
  Show Answer
  The correct answer is B .
• Question 1564: The mass of a proton is approximately equal to that of Options:
  A) an $\alpha$-particle
  B) a $\beta$-particle
  C) $\gamma$-ray
  D) an electron
  E) a neutron
  Show Answer
  The correct answer is E .
• Question 1565: A heavy object is suspended from a string and lowered into water so that it is completely submerged. The object appears lighter because Options:
  A) the density of water is less than that of the object
  B) the pressure is low just below the water surface
  C) it experiences an upthrust
  D) the tension in the string neutralizes part of the weight
  Show Answer
  The correct answer is C .
• Question 1566: Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length Options:
  A) 12.4 m
  B) 15.7 m
  C) 17.5 m
  D) 18.6 m
  Show Answer
  The correct answer is B .
• Question 1567:

  

  The figure above shows the heights of two liquids X and Y when some air is sucked out of the apparatus through the pump P. The diameter of the table in X is twice That of the Tube In Y. What is the relative density of the liquid X with respect to liquid Y

  Options:
  A) 1/3
  B) 2/3
  C) 3
  D) 6
  Show Answer
  The correct answer is C .
• Question 1568:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 1569: When an ebolite rod is rubbed with fur, it has Options:
  A) no charge at all
  B) a negative charge
  C) a positive charge
  D) negative and positive charges
  Show Answer
  The correct answer is B .
• Question 1570: a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds? Options:
  A) 4ms^-1
  B) 10ms^-1
  C) 20ms^-1
  D) 50ms^-1
  E) 80ms^-1
  Show Answer
  The correct answer is C .