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 1581:

  A cell whose internal resistance is 0.55$\mathrm{\Omega }$ delivers a current of 4 A to an external resistor. The lost voltage of the cell is?

  Options:
  A) 4.00 V
  B) 2.20 V
  C) 0.15 V
  D) 8.00 V
  Show Answer
  The correct answer is B .
• Question 1582: Which of the following is a pure semiconductor? Options:
  A) carbon
  B) silicon
  C) transistor
  D) phosphorus
  Show Answer
  The correct answer is B .
• Question 1583: A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is Options:
  A) 200 Ω
  B) 50 Ω
  C) 100/π Ω
  D) 25/π Ω
  Show Answer
  The correct answer is A .
• Question 1584: If the stress on a wire is 10⁷NM^-2 and the wire is stretched from its original length of 10.00 cm to 10.05 cm. The young's modulus of the wire is Options:
  A) 5 . 0 x 10⁴ Nm^-2
  B) 5 . 0 x 10⁵ Nm^-2
  C) 2 . 0 x 10⁸ Nm^-2
  D) 2 . 0 x 10⁹ Nm^-2
  Show Answer
  The correct answer is D .
• Question 1585: The difference of potential between the terminals of cells is 2.2 volts. When a 4ohm resistor is connected across the terminals of this cells, the potential difference is 2 volts. What is the internal resistance of the cell? Options:
  A) 0.10 ohms
  B) 0.25ohms
  C) 0.40ohms
  D) 2.50ohms
  E) 4.00ohms
  Show Answer
  The correct answer is C .
• Question 1586: Silicon doped with aluminum and germanium doped with arsenic become? Options:
  A) p- and n- types respectively
  B) n- en p- type respectively
  C) p- type semiconductor
  D) n- type semiconductors
  Show Answer
  The correct answer is A .
• Question 1587: Which of the following statements describes an atom accurately? i. atoms of all elements are identical ii. an atom contains a nucleus and number of electrons iii. due to the electrons in the atom an atom is negatively charged iv. electrons in the atom move in circular orbits round the nucleus Options:
  A) i and ii
  B) ii and iii
  C) iii and iv
  D) ii and iv only
  E) i,ii and iii
  Show Answer
  The correct answer is D .
• Question 1588: Which of the following statements are true of an insulated charged body carrying positive charge? i. it contains excess positive charges. ii. it creates an electric field. iii. it possesses potential energy. iv. it carries electric current. Options:
  A) i and iv only
  B) i and ii only
  C) i, ii, iii only
  D) i, ii, iii and iv
  Show Answer
  The correct answer is D .
• Question 1589:

  "Sum of all forces acting on a body is zero." This condition represents equilibrium'

  Options:
  A) First condition
  B) Second condition
  C) Third condition
  D) Fourth condition
  Show Answer
  The correct answer is A .
• Question 1590:

  

  The wave phenomenon demonstrated in the diagram above is

  Options:
  A) reflection
  B) deflection
  C) diffraction
  D) refraction
  Show Answer
  The correct answer is C .