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 2561: 1,000 identical drops of oil of density 500kgm^-3 have a total mass of 5 x 10^-4kg. One of the drops forms a thin film of area 0.5m² on water. The thickness of the film is Options:
  A) 2 x 10^-8m
  B) 2 x 10^-9m
  C) 2 x 10^-7m
  D) 3 x 10^-9m
  E) 2.8 x 10^-8m
  Show Answer
  The correct answer is B .
• Question 2562:

  

  Fig 8 shows a current I flowing in a copper wire situated in a magnetic field existing between the pole-pieces of a horse-shoe magnet.

  Which of the following statements is correct?

  Options:
  A) The wire will experience a force in the direction into the paper
  B) The wire will experience a force in the direction out of the paper
  C) The wire will vibrate in a direction into and out of the paper
  D) the wire will move in the direction of the field i.e toward the s-pole
  E) the wire will not move because it is made of copper which is non magnetic
  Show Answer
  The correct answer is B .
• Question 2563: Transistors are used for the Options:
  A) rectification of signals
  B) conversion of a.c to d.c
  C) amplification of signals
  D) conversion of d.c to a.c
  Show Answer
  The correct answer is C .
• Question 2564: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 2565: Which of the following properties make the convex mirror useful as a driving mirror? i. the image is real. ii. the image is erect. iii. it has a wide field of view. iv. the image is magnified. Options:
  A) i, ii, and iv
  B) i, ii, iii
  C) ii and iii
  D) i and iii
  Show Answer
  The correct answer is C .
• Question 2566: If the temperature of a resistance wire is gradually increased, its resistance will Options:
  A) decrease gradually
  B) first increase and then decrease
  C) first increase and then remain the same
  D) increase gradually
  E) remain the same
  Show Answer
  The correct answer is C .
• Question 2567: A wave of frequency 10Hz forms a stationary wave pattern in a medium where the velocity is 20cms^-1. The distance between adjacent nodes is Options:
  A) 1.0cm
  B) 1.5cm
  C) 2.0cm
  D) 5.0cm
  Show Answer
  The correct answer is C .
• Question 2568: Which of the following elements is the best absorber of X-rays? Options:
  A) hydrogen
  B) oxygen
  C) calcium
  D) copper
  E) lead
  Show Answer
  The correct answer is E .
• Question 2569: 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 2570: Heat is radiated by hot objects in the form Options:
  A) x-rays
  B) light energy
  C) infrared rays
  D) solar energy
  Show Answer
  The correct answer is C .