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 1371: A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is Options:
  A) 0.12 cm³
  B) 4.00 cm³
  C) 1.20 cm³
  D) 0.40 cm³
  E) no correct option
  Show Answer
  The correct answer is E .
• Question 1372: 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 1373: If a wire 30 cm long is extended to 30.5 cm by a force of 300 N. find the strain energy of wire Options:
  A) 0.75 J
  B) 7.50 J
  C) 75.00 J
  D) 750.00 J
  Show Answer
  The correct answer is A .
• Question 1374: A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule? Options:
  A) 95cm
  B) 25cm
  C) 20cm
  D) 5cm
  Show Answer
  The correct answer is B .
• Question 1375:

  

  The frequency of the wave in the diagram above is

  Options:
  A) 0.17 Hz
  B) 0.25 Hz
  C) 1.57 Hz
  D) 1.05 Hz
  Show Answer
  The correct answer is B .
• Question 1376: A conductor has a diameter of 1.00mm and length of 2.00m. If the resistance of the material is 0.1Ω, the resistivity is Options:
  A) 2.55 * 10⁵ Ωm
  B) 2.55 * 10³ Ωm
  C) 3.93 * 10^-6 Ωm
  D) 3.93 * 10^-8 Ωm
  Show Answer
  The correct answer is D .
• Question 1377: If the distance between two suspended masses 10kg each is tripled, the gravitational force of attraction between them is reduced by Options:
  A) one half
  B) one third
  C) one quarter
  D) one ninth
  Show Answer
  The correct answer is D .
• Question 1378: A band of 500 rectangular loops of wire of area 20 cm by 20 cm, encloses a region of magnetic field which charges from 1.0T to 0.4T within 5 seconds, calculate the induced e.m.f. Options:
  A) 5.60 v
  B) 24.00 v
  C) 0.24 v
  D) 2.40 v
  Show Answer
  The correct answer is D .
• Question 1379: A 120 V, 60 W lamp is to be operated on 220 V a.c. the supply mains. calculate the values of non-inductive resistance that would be required to ensure that the lamp is run on current value. Options:
  A) 100 Ω
  B) 200 Ω
  C) 300 Ω
  D) 500 Ω
  Show Answer
  The correct answer is B .
• Question 1380: A wave travels a distance of 20 cm in 3s. The distance between successive crests of the wave is 4cm. What is the frequency of the wave? Options:
  A) 0.60Hz
  B) 1.67Hz
  C) 7.50Hz
  D) 15.00Hz
  E) 26.67Hz
  Show Answer
  The correct answer is B .