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 1741: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 1742: Which of the following statements about the concept of solid friction is NOT true? Options:
  A) It always acts in the direction of motion
  B) It causes wear and tear in car tyres
  C) It depends on the nature of the surfaces in contact
  D) It is independent of the area of the surfaces in contact.
  E) It reduces the efficiency of the machine
  Show Answer
  The correct answer is A .
• Question 1743:

  A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal velocity of 50ms^-1. If it rebounced with a horizontal velocity of 30ms^-1, calculate the impulse of the ball on the ball.

  Options:
  A) 3.0Ns
  B) 4.5Ns
  C) 7.5Ns
  D) 12.0Ns
  Show Answer
  The correct answer is D .
• Question 1744: 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 1745: A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine Options:
  A) 80.0%
  B) 76.6%
  C) 66.7%
  D) 60.7%
  Show Answer
  The correct answer is C .
• Question 1746: A pool of water appears to be 1.0m deep when viewed vertically from above. If the refractive index of water is 1.33, what is the actual depth of the pool? Options:
  A) 0.750m
  B) 1.013m
  C) 1.330m
  D) 13.3000m
  Show Answer
  The correct answer is C .
• Question 1747: A piece of stone weights 180 N in air and 150 N in a beaker containing 160 N of methylated spirit. What is the up thrust exerted on the stone? Options:
  A) 50N
  B) 40N
  C) 30N
  D) 20N
  E) 10N
  Show Answer
  The correct answer is C .
• Question 1748:

  Which of the following liquids has the highest surface tension?

  Options:
  A) Soapy water
  B) Water
  C) Mercury
  D) Oil
  Show Answer
  The correct answer is C .
• Question 1749: A bar of initial length /₀ is heated through a temperature change $\mathrm{\Delta }$t to a new length I. The linear expansivity, a, of the bar is Options:
  A) $\frac{/-{/}_o}{/\mathrm{\Delta }t}$
  B) $\frac{/-{/}_o}{{/}_o\mathrm{\Delta }t}$
  C) /_o(1 + $\mathrm{\Delta }$ t)
  D) $\frac{/-{/}_o}{/(1+\mathrm{\Delta }t)}$
  Show Answer
  The correct answer is B .
• Question 1750:

  The motion of a body is simple harmonic if the?

  Options:
  A) acceleration is always directed towards a fixed point
  B) path of motion is a straight line
  C) acceleration is proportional to the square of the distance from a fixed point
  D) acceleration is constant and directed towards a fixed point
  Show Answer
  The correct answer is A .