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 831:

  According to kinetic molecular model in gases,

  Options:
  A) the particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern
  B) the particles vibrate about fixed positions and are held together by the strong intermolecular bonds between them
  C) the molecules are very far apart and occupy all the spaces made available to them
  D) the particles occur in clusters with molecules slightly further apart
  Show Answer
  The correct answer is C .
• Question 832:

  A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound

  Options:
  A) 312.0 ms${}^{-1}$
  B) 110.0 ms${}^{-1}$
  C) 343.2 ms${}^{-1}$
  D) 686.4 ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 833: Which of the following are true about the infra-red radiation? i. it is invisible ii. it is called heat ray iii. its frequency is higher than that of blue light iv. it travels as a transverse wave Options:
  A) i, ii, iii and iv
  B) i, ii, iv only
  C) i, iii, iv only
  D) ii, iii, iv only
  Show Answer
  The correct answer is B .
• Question 834:

  

  In the diagram above, which of the angles ${\theta }_1$ , ${\theta }_2$ , ${\theta }_3$ and ${\theta }_4$ is the angle of deviation of the ray of light passing through the glass prism XYZ?

  Options:
  A) ${\theta }_3$
  B) ${\theta }_2$
  C) ${\theta }_1$
  D) ${\theta }_4$
  Show Answer
  The correct answer is C .
• Question 835: A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the Options:
  A) 80%
  B) 75%
  C) 50%
  D) 33%
  Show Answer
  The correct answer is B .
• Question 836: A conductor has a diameter of 1.00mm and length of 2.00m. If the resistance of the material is 0.1Ω, the resistivity is Options:
  A) 2.55 * 10⁵ Ωm
  B) 2.55 * 10³ Ωm
  C) 3.93 * 10^-6 Ωm
  D) 3.93 * 10^-8 Ωm
  Show Answer
  The correct answer is D .
• Question 837:

  When the temperature of a liquid increases,its surface tension

  Options:
  A) decreases
  B) increases
  C) remains constant
  D) increases then decreases
  Show Answer
  The correct answer is A .
• Question 838:

  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 839:

  A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium

  Options:
  A) an increase in the kinetic energy of the body
  B) an increase in the potential energy of the body
  C) a decrease in the kinetic energy of the body
  D) an increase in the height of the body
  Show Answer
  The correct answer is B .
• Question 840: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .