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 1701: The direction of the magnetic field at a point in the vicinity of a bar magnet is Options:
  A) always towards the north pole of the magnet
  B) always away from the south pole of the magnet
  C) along the line joining the point to the neutral point
  D) in the direction the north pole of a compass needle would point
  Show Answer
  The correct answer is D .
• Question 1702: At reasonance, the phase angle in an a.c. circuit is Options:
  A) 90°
  B) 60°
  C) 0°
  D) 180°
  Show Answer
  The correct answer is C .
• Question 1703: A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P? Options:
  A) 1500N
  B) 500N
  C) 4166N
  D) 750N
  Show Answer
  The correct answer is A .
• Question 1704: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 1705: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 1706: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1707: 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 1708: The speed of light in vacuum is 3.0 x 10⁸ms^-1. If the refractive index of a transparent liquid is $\frac{4}{3}$, then the speed of light in the liquid is Options:
  A) 0.44 x 10 ⁸ms^-1
  B) 2.25 x 10 ⁸ms^-1
  C) 3.0 x 10 ⁸ms^-1
  D) 4.0 x 10 ⁸ms^-1
  E) 4.33 x 10 ⁸ms^-1
  Show Answer
  The correct answer is B .
• Question 1709:
  

  Two mirrors of the same length are arranged as shown in the diagram. A ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through

  Options:
  A) 220${}^o$
  B) 200${}^o$
  C) 210${}^o$
  D) 180${}^o$
  Show Answer
  The correct answer is D .
• Question 1710: Lenz's law is a law of conservation of Options:
  A) electric charge
  B) electric current
  C) Energy
  D) Momentum
  Show Answer
  The correct answer is C .