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 261: When equal weights of iron and water are subjected to equal supply of heat, it is found that the piece of iron become more hotter than water after a short time because Options:
  A) the specific heat of iron is higher than that of water
  B) iron is in solid form
  C) water is in liquid form
  D) the specific heat of water is higher than that of iron
  E) the specific heat of iron is infinite
  Show Answer
  The correct answer is D .
• Question 262:

  The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air.

  Options:
  A) 3.33%
  B) 5.55%
  C) 33.33%
  D) 55.55%
  Show Answer
  The correct answer is C .
• Question 263: Two masses 40g and 60g respectively, are attached firmly to the ends of the light meter rule. The center of gravity of the system is Options:
  A) at the mid-point of the meter rule
  B) 40cm from the lighter mass
  C) 40cm from the heavier mass
  D) 60cm from the heavier mass
  E) indeterninate because the meter-rule is light
  Show Answer
  The correct answer is C .
• Question 264: 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 .
• Question 265:

  Which of the following instruments may be used to measure relative humidity?

  Options:
  A) Hydrometer
  B) Manometer
  C) Hygrometer
  D) Hypsometer
  Show Answer
  The correct answer is C .
• Question 266: The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40hz and 180Hz? Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 267:

  

  A body on the ground is acted on by a force of 10N at a point P as shown in the fig above. What force is needed to stop the body from moving eastwards

  Options:
  A) 5N in the direction of east
  B) 5N in the diretion of west
  C) 5V3N in the direction of west
  D) 10N in the southwest direction
  Show Answer
  The correct answer is B .
• Question 268: An example of a scalar quantity is Options:
  A) velocity
  B) weight
  C) electric charge
  D) acceleration due to gravity
  E) momentum
  Show Answer
  The correct answer is C .
• Question 269: A particle starts from rest and moves with a constant acceleration of 0.5ms^-2. The distance covered by the particle in 10s is Options:
  A) 2.5m
  B) 5.0m
  C) 25.0m
  D) 50.0m
  Show Answer
  The correct answer is C .
• Question 270:

  The earth's gravitational field intensity at its surface is about

  (G = 6.7 × 10${}^{-11}$Nm${}^2$/kg${}^2$, mass of the earth is 6 × 10${}^{24}$kg, radius of the earth is 6.4 × 10${}^6$m, g on the earth = 9.8m/s${}^2$)

  Options:
  A) 6.7N/kg
  B) 7.9N/kg
  C) 8.0N/kg
  D) 9.8N/kg
  Show Answer
  The correct answer is D .