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 451: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{30}X$
  B) ${}_{30}^{28}X$
  C) ${}_{30}^{58}X$
  D) ${}_{28}^{58}X$
  Show Answer
  The correct answer is D .
• Question 452: The function of a 5-A fuse included in a circuit supplying a household refrigerator with power is to keep the Options:
  A) Temperature of the refrigerator low and constant
  B) keep current supplied to the refrigerator below 5A
  C) Voltage supply constant
  D) Current supplies to the refrigeration
  Show Answer
  The correct answer is B .
• Question 453:

  

  Two taxis leave Benin and Agbor some 80km apart at 1200hr as shown above. from the distance time graph shown the distance of their meeting point P, from Benin and the time of their meeting are

  Options:
  A) 27km, 1218hr
  B) 29km, 1315hr
  C) 40km, 1418hr
  D) 53km, 1436hr
  E) 60km, 1500hr
  Show Answer
  The correct answer is B .
• Question 454: The small droplets of water that form on the grass in the early hours of the morning is Options:
  A) Fog
  B) Haul
  C) Mist
  D) Dew
  Show Answer
  The correct answer is D .
• Question 455: A glass bottle of initial volume 2 x 10⁴ cm³ is heated from 20^oC to 50^oC. If the linear expansivity of glass is 9 x 10⁶K^-1, the volume of the bottle at 50^oC is Options:
  A) 20016.2cm³
  B) 20005.4cm³
  C) 20008.1cm³
  D) 20013.5cm³
  Show Answer
  The correct answer is A .
• Question 456: The strength of an electromagnet increase with Options:
  A) Increase in the number of turn of the coil
  B) Decrease in current with the coil
  C) Increase in the distance between the pole
  D) Increase in current without the coil
  Show Answer
  The correct answer is A .
• Question 457:

  A gas at a volume of V${}_0$ in a container at pressure p${}_0$ is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

  Options:
  A) $\frac{p_0}{5}$
  B) $\frac{4p_0}{5}$
  C) p${}_0$
  D) 5P${}_0$
  Show Answer
  The correct answer is D .
• Question 458:

  

  A body of mass 6kg rests on an inclined plane. The normal reaction is R and the limiting frictional force is F as shown in the image above. if F = 30N, and g = 10ms² then the angle of inclination $\theta$ is

  Options:
  A) ${15}^{\circ }$
  B) ${30}^{\circ }$
  C) ${45}^{\circ }$
  D) ${60}^{\circ }$
  E) ${75}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 459: The pressure on the gas of constant gas thermometer at the ice point is 325mm of mercury and at the steam point is 875mm of mercury. Find the temperature when the pressure of the gas is 190mm of mercury Options:
  A) 30k
  B) 243k
  C) 300k
  D) 3003k
  Show Answer
  The correct answer is B .
• Question 460: The focal length of a concave mirror is 2.0cm. If an object is placed 8.0cm from it, the image is at Options:
  A) 2.7m
  B) 2.0m
  C) 2.3m
  D) 2.5m
  Show Answer
  The correct answer is A .