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 141:

  A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is 340ms${}^{-1}$, how far is he from the cliff?

  Options:
  A) 680m
  B) 170m
  C) 34m
  D) 85m
  Show Answer
  The correct answer is D .
• Question 142: When an atom loses or gains a charge, it becomes Options:
  A) an electron
  B) an ion
  C) a neutron
  D) a proton
  Show Answer
  The correct answer is B .
• Question 143: If the temperature of a resistance wire is gradually increased, its resistance will Options:
  A) decrease gradually
  B) first increase and then decrease
  C) first increase and then remain the same
  D) increase gradually
  E) remain the same
  Show Answer
  The correct answer is C .
• Question 144: Which of the following statements is Not true about atoms? Options:
  A) Atom of different elements have different atomic weights
  B) The mass of an atom is concentrated in the nucleus
  C) An atom is made up of a nucleus and number of electrons
  D) Atoms of all elements are identical
  Show Answer
  The correct answer is D .
• Question 145: If the distance between two suspended masses 10kg each is tripled, the gravitational force of attraction between them is reduced by Options:
  A) one half
  B) one third
  C) one quarter
  D) one ninth
  Show Answer
  The correct answer is D .
• Question 146: An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is Options:
  A) mg
  B) (m + pv)g
  C) (m - pv)g
  D) pvg
  E) [M/m-pv]g
  Show Answer
  The correct answer is C .
• Question 147: The fundamental property of a propagating wave which depends only on the source and not the medium of propagation is the? Options:
  A) wavelength
  B) harmonies
  C) frequency
  D) velocity
  Show Answer
  The correct answer is B .
• Question 148:

  

  In the diagram above, the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static friction between the mass m1 and the table is

  Options:
  A) m1/m2
  B) m1g/m2
  C) m2/m1
  D) m2g/m1
  Show Answer
  The correct answer is C .
• Question 149: In a fission process, the decrease in mass is 0.01%. How much energy could be obtained from the fission of 0.1g of the material Options:
  A) $9.0\times {10}^{9}J$
  B) $9.0\times {10}^{10}J$
  C) $6.3\times {10}^{11}J$
  D) $9.0\times {10}^{11}J$
  Show Answer
  The correct answer is A .
• Question 150: Which of the following statements supports the assumption that light travels in straight lines? Options:
  A) light can be diffracted
  B) a source of light produces distinct shadows of opaque objects
  C) a source of light produces interference patterns on a suitably placed screen
  D) light can be reflected
  Show Answer
  The correct answer is B .