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 1271:

  Which of the following obeys Ohm's law?

  Options:
  A) all metals
  B) diode only
  C) all electrolytes
  D) glass
  Show Answer
  The correct answer is A .
• Question 1272:

  

  The current I in the fig above is

  Options:
  A) 4.00A
  B) 1.30A
  C) 0.80A
  D) 0.75A
  Show Answer
  The correct answer is A .
• Question 1273: For a concave mirror to form a teal diminished image, the object must be placed Options:
  A) behind the mirror
  B) between the mirror and its focus
  C) between the focus and the centre of curvature
  D) at the centre of curvature
  E) at a distance greater than the radius of curvature
  Show Answer
  The correct answer is E .
• Question 1274: A drop of petrol makes a finger colder than a drop of water would because? Options:
  A) petrol takes its latent heat of veporization from the finger
  B) petrol takes its latent heat of fusion from the finger
  C) water is more viscious than petrol
  D) water has higher surface tension dan petrol
  Show Answer
  The correct answer is A .
• Question 1275: A vapour is said to be saturated when Options:
  A) moer molecules return to the liquid than leave it
  B) a dynamic equilibrium exists between the liquid molecules and the vapour molecules at a given temperature
  C) the vapour pressure is atmospheric
  D) the temperature of the vapour varies
  E) all molecules are moving with the same speed
  Show Answer
  The correct answer is B .
• Question 1276: 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 1277: A projection lantern is used to give the image of a slide on a screen. If the image is 24 times as large as the slide and the screen is 72.0m from the projecting lens, what is the position of the slide from the lens? Options:
  A) 0.3m
  B) 3.0m
  C) 3.5m
  D) 4.0m
  Show Answer
  The correct answer is B .
• Question 1278: Which of the following quantities has the same unit as the watt? Options:
  A) Force x time
  B) Force x distance
  C) Force x acceleration
  D) Force x velocity
  Show Answer
  The correct answer is D .
• Question 1279: The name given to the characteristics behaviour of substances which set their length perpendicular to a strong magnetic field instead of in line with it is Options:
  A) magnetization
  B) paramagnetism
  C) diamagnetism
  D) demagnetism
  E) ferromagnetism
  Show Answer
  The correct answer is A .
• Question 1280: One end of a long wire is fixed while a vibrator is attached to the other end. When the vibrator is energized, the types of waves generated in the wire are Options:
  A) stationary and longitudinal
  B) stationary and transverse
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is C .