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 291: 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 292: The mode of heat transfer which does not require a material medium is Options:
  A) conduction
  B) radiation
  C) convection
  D) propagation
  Show Answer
  The correct answer is B .
• Question 293: A car of mass 800kg attains a speed of 25m/s in 20 secs. The power developed in the engine is Options:
  A) 1 . 25 x 10⁴ W
  B) 2 . 50 x 10⁴ W
  C) 1 . 25 x 10⁶W
  D) 2 . 50 x 10⁶ W
  Show Answer
  The correct answer is B .
• Question 294: Which of the following are found in the receiver but not in the microphone of a telephone handset? i. Diaphragm. ii. soft iron pole pieces. iii. permanent magnet. iv.carbon blocks Options:
  A) i and ii
  B) i and iv
  C) ii and iii
  D) iii and iv
  Show Answer
  The correct answer is B .
• Question 295: An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3 minutes 20 seconds. Determine the heat produced Options:
  A) 0.5kJ
  B) 8.0kJ
  C) 20.0kJ
  D) 40.0kJ
  Show Answer
  The correct answer is D .
• Question 296:

  The differences observed in solids, liquids and gases may be accounted for by

  Options:
  A) their relative masses
  B) their melting points
  C) the spacing and forces acting between the molecules
  D) the different molecules in each of them
  Show Answer
  The correct answer is C .
• Question 297:

  Which of the following statements is not true?

  Options:
  A) The mechanical advantage of a smooth inclined plane depends on the ratio of the length to the height of the plane.
  B) The efficiency of an inclined plane decreases as the slope increases.
  C) The effort required to push a given load up an inclined plane increases as the slope increases.
  D) As the slope of an inclined plane increases, the velocity ratio decreases.
  Show Answer
  The correct answer is A .
• Question 298:

  

  In the circuit above, The potential across each capacitor is 100V. The total energy stored in the two capacitors is

  Options:
  A) 3.0 x 10⁴J
  B) 3.0 x 10²J
  C) 2.5 x 10^-2J
  D) 6.0 x 10^-3J
  Show Answer
  The correct answer is C .
• Question 299:

  A 2H inductor has negligible resistance and is connected to a $\frac{50}{\pi }$ Hz A.C supply. The reactance of the inductor is?

  Options:
  A) 200$\mathrm{\Omega }$
  B) 50$\mathrm{\Omega }$
  C) $\frac{100}{\pi }$
  D) $\frac{25}{\pi \mathrm{\Omega }}$
  Show Answer
  The correct answer is A .
• Question 300: When a box of mass 45kg, is given an initial speed of 5ms^-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms^-2) Options:
  A) $\frac{5}{6}$
  B) $\frac{5}{12}$
  C) $\frac{1}{3}$
  D) $\frac{2}{3}$
  Show Answer
  The correct answer is B .