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 251:

  

  The diagram above represents balls in an undulating surface. Which of the following option represents positions of stable equilibrium?

  Options:
  A) III, IV and VIII
  B) II, V and VIII
  C) III, VI and IX
  D) I, IV and VII
  Show Answer
  The correct answer is C .
• Question 252: Body floats in fluid when its ………………… Options:
  A) Displaces its own volume of the liquid (fluid)
  B) Displaces its own mass of the fluid
  C) Displace its own density of the fluid
  D) Is no longer subjected to gravity
  Show Answer
  The correct answer is B .
• Question 253: Primary colours of light are Options:
  A) Red, blue and green
  B) Cyan, magneta and yellow
  C) Black, blue and green
  D) None of these colours
  Show Answer
  The correct answer is A .
• Question 254: The maximum power transfer occur in a cell when the external resistance is Options:
  A) Twice the internal resistance of the cell
  B) The same as the internal resistance of the cell
  C) Greater than the internal resistance of the cell
  D) Less than the internal resistance of the cell
  Show Answer
  The correct answer is B .
• Question 255: A 5-v battery is connected across the plates of a 2.0$\mu$F uncharged parallel plate capacitor. The charge on the capacitor after a long time is Options:
  A) 2.5$\mu$C
  B) 10.0$\mu$C
  C) 20.0$\mu$C
  D) 50.0$\mu$C
  Show Answer
  The correct answer is B .
• Question 256:

  The linear expansivityof brass is 2 x 10${}^{-5}$ ${}^o{C}^{-1}$. If the volume of piece of brass is 10cm${}^3$ at 0${}^o$C. What will be its volume at 100${}^o$C?

  Options:
  A) 10.06cm${}^3$
  B) 10.04 cm${}^3$
  C) 10.02 cm${}^3$
  D) 10.20 cm${}^3$
  Show Answer
  The correct answer is A .
• Question 257: Which of the following is the dimension of pressure? Options:
  A) ML^-1T^-2
  B) MLT^-2
  C) ML²T^-3
  D) ML^-3
  Show Answer
  The correct answer is A .
• Question 258: Which of the following is a set of vectors? Options:
  A) force, mass and moment
  B) acceleration, velocity and moment
  C) mass, weight and density
  D) mass, volume and density
  Show Answer
  The correct answer is B .
• Question 259:

  If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

  Options:
  A) 32.5kg^-1 s
  B) 31.5kg^-1 s
  C) 30.8kg^-1 s
  D) 30.0kg^-1 s
  Show Answer
  The correct answer is D .
• Question 260: Lodestone is a natural magnet, it points at Options:
  A) N – W when suspended freely
  B) N–S when suspended freely
  C) S – E when suspended freely
  D) S–W when suspended freely
  Show Answer
  The correct answer is B .