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 1631:

  

  The diagram above represents the stress-strain graph of a loaded wire. Which of these statements is correct?

  Options:
  A) At J, the wire becomes plastic
  B) J is the yield point
  C) L is the elastic limit
  D) At K, the wire breaks
  Show Answer
  The correct answer is B .
• Question 1632: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 1633: The saturated vapour pressure of a liquid increases as the Options:
  A) volume of the liquid increases
  B) volume of the liquid decreases
  C) temperature of the liquid increases
  D) temperature of the liquid decreases
  Show Answer
  The correct answer is C .
• Question 1634: If the pressure of the vapour on top of an enclosed liquid is equal to the atmospheric pressure, what will be the temperature of the liquid enclosed? Options:
  A) room temperature
  B) boiling point
  C) freezing point
  D) standard temperature
  Show Answer
  The correct answer is B .
• Question 1635:

  In what range oftemperature is the expansion of water anomalous?

  Options:
  A) +208${}^o$C to +212${}^o$C
  B) -80${}^o$C + -76${}^o$C
  C) 0${}^o$C to +4${}^o$C
  D) -4${}^o$C to +0${}^o$C
  Show Answer
  The correct answer is C .
• Question 1636: Which of the following statements about the compound microscope and astronomical telescope is (are) correct? i. the final image of a compound microscope is located at infinity ii. the final image of the astronomical telescope is always erect iii. the objective lens of a compound microscope has a very short focal length Options:
  A) i only
  B) ii only
  C) iii only
  D) i and iii
  E) ii and iii
  Show Answer
  The correct answer is C .
• Question 1637: Which of the following symbolic representations is correct for an atom X with 22 electrons and 43 neutrons? Options:
  A) ${}_{22}^{43}X$
  B) ${}_{43}^{22}X$
  C) ${}_{43}^{65}X$
  D) ${}_{22}^{65}X$
  Show Answer
  The correct answer is D .
• Question 1638:

  0.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg${}^1$ Cº. Calculate the specific latent heat of fusion of ice.

  Options:
  A) 9.0kjkg${}^{-1}$
  B) 84.0kjkg${}^{-1}$
  C) 134.0kjkg${}^{-1}$
  D) 168.0kjkg${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1639: A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point Options:
  A) 11.36km
  B) 12.36km
  C) 13.00km
  D) 14.36km
  Show Answer
  The correct answer is A .
• Question 1640:

  

  From the diagram above, the bob of the pendulum has the fastest speed at

  Options:
  A) X
  B) Y
  C) Z
  D) W
  Show Answer
  The correct answer is A .