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 1441: A certain far - sighted person cannot see object that are closer to the eye than 50 cm clearly. Determine the power of the converging lens which will enable him to see at 25 cm Options:
  A) 0.06 D
  B) 0.02 D
  C) 0.03 D
  D) 0.04 D
  E) no option is correct
  Show Answer
  The correct answer is E .
• Question 1442: 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 1443: A block of ice floats on water inside a container. If the block of ice gets completely melted, the level of water in the container will Options:
  A) increase
  B) remain the same
  C) decrease
  D) first decrease and then increase
  Show Answer
  The correct answer is B .
• Question 1444: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 1445: A bar of initial length /₀ is heated through a temperature change $\mathrm{\Delta }$t to a new length I. The linear expansivity, a, of the bar is Options:
  A) $\frac{/-{/}_o}{/\mathrm{\Delta }t}$
  B) $\frac{/-{/}_o}{{/}_o\mathrm{\Delta }t}$
  C) /_o(1 + $\mathrm{\Delta }$ t)
  D) $\frac{/-{/}_o}{/(1+\mathrm{\Delta }t)}$
  Show Answer
  The correct answer is B .
• Question 1446: Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high Options:
  A) 10 cm
  B) 16 cm
  C) 5 cm
  D) 14 cm
  Show Answer
  The correct answer is D .
• Question 1447: Which of the following statements defines correctly the efficiency of a machine? Options:
  A) the load carried by the machine divided by effort required in carrying the load
  B) the distance moved by the load divided by the distance moved by the effort
  C) the useful work done by the machine divided by the total work put into the machine
  D) the movement of the load divided by the movement of the effort about the same point
  E) the temperature at the end of the application of the machine divided by the initial temperature
  Show Answer
  The correct answer is C .
• Question 1448: An object of heights 5 cm is placed at 20 cm from a concave mirror of focal length 10 cm. the image height is? Options:
  A) 20 cm
  B) 15 cm
  C) 10 cm
  D) 5 cm
  Show Answer
  The correct answer is D .
• Question 1449:

  I. High thermal capacity.

  II. High sensitivity.

  III.Easy readability.

  IV. Accuracy over a wide range of temperature

  From the statement above, the qualities of a good thermometer are

  Options:
  A) I and II
  B) I, II,III and IV
  C) I, III and IV
  D) II, III and IV
  Show Answer
  The correct answer is D .
• Question 1450: The atmospheric pressure due to water is 1.3 x 10⁶Nm^-2. What is the total pressure at the bottom of an ocean 10m deep? [Density of water = 1000kgm^-3, g = 10ms^-2] Options:
  A) 1.3 x 10⁷Nm^-2
  B) 1.4 x 10⁶Nm^-2
  C) 1.4 x 10⁵Nm^-2
  D) 1.0 x 10 ⁵Nm^-2
  Show Answer
  The correct answer is B .