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 1101: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 1102: At what frequency would a 10H inductor have a reactance of 2000Ω? Options:
  A) π/200Hz
  B) π/100Hz
  C) 100/πHz
  D) 100πHz
  Show Answer
  The correct answer is C .
• Question 1103: If a heavy barrel is rolled up a plane inclined at 30° to the horizontal. its velocity ratio will be Options:
  A) 3.0
  B) 3.1
  C) 3.2
  D) 2.0
  Show Answer
  The correct answer is D .
• Question 1104: Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge? Options:
  A) the charge must be of opposite sign
  B) positive charges are more in number
  C) the charges are electrically neutral
  D) the charges are of the same sign
  Show Answer
  The correct answer is A .
• Question 1105:

  I. They should be identical

  II. They should originate from the same source.

  III. They should be coherent.

  IV. They should be monochromatic.

  From the statements above, the conditions for two waves to interfere are?

  Options:
  A) I,II and III only
  B) I, III and IV only
  C) II, III and IV only
  D) I, II, III and IV
  Show Answer
  The correct answer is B .
• Question 1106: An alternating source is connected in series to a capacitor of capacity reactance ${10}^3\sqrt{3}$ and a resistor of resistance 10³ Ohms. The Impedance of the circuit is... Options:
  A) $2000\sqrt{3}$ Ohms
  B) 2000 Ohms
  C) $1000\sqrt{3}$ Ohms
  D) 1000 Ohms
  Show Answer
  The correct answer is B .
• Question 1107:

  A single force which produces the same effect as a set of forces acting together at a point is known as the

  Options:
  A) component
  B) equilibrant
  C) resultant
  D) resistant
  Show Answer
  The correct answer is C .
• Question 1108:

  When blue and green colours of light are mixed, the resultant colour is

  Options:
  A) cyan
  B) magenta
  C) black
  D) yellow
  Show Answer
  The correct answer is A .
• Question 1109:

  A man swung an object of mass 2 kg in a circular path with a rope 1.2 m long. If the object was swung at 120 rev/min, find the tension in the rope.

  Options:
  A) 400 N
  B) 288 N
  C) 240 N
  D) 379 N
  Show Answer
  The correct answer is D .
• Question 1110: Three capacitors of capacitance 2μF, 4μFand 8μF are connected in parallel and a P.D of 6V is maintained across each capacitor, the total energy stored is Options:
  A) 2.52 x 10^-6J
  B) 6.90 x 10^-6J
  C) 2.52 x 10^-4J
  D) 6.90 x 10^-4J
  Show Answer
  The correct answer is C .