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 671: During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is? Options:
  A) 1.0 g
  B) 0.5 g
  C) 3.0 g
  D) 2.0 g
  Show Answer
  The correct answer is D .
• Question 672: An object 3.0cm high is placed 60.0cm from a converging lens whose focal length is 20.0cm. Calculate the size of the image formed Options:
  A) 0.5cm
  B) 1.5cm
  C) 2.0cm
  D) 6.0cm
  Show Answer
  The correct answer is B .
• Question 673: A 500kg car which was initially at rest travelled with an acceleration of 5m sec^-2, its kinetic energy after 4 seconds was Options:
  A) 10⁵J
  B) 2.5 x 10³J
  C) 2 x 10³J
  D) 5 x 10³J
  E) 5 x 10^5J`
  Show Answer
  The correct answer is A .
• Question 674: 1kg of copper is transferred quickly from boiling water to a block of ice. Calculate the mass of ice melted, neglecting heat loss. [specific heat capacity of copper 400Jkg^-1K^-1 and latent heat of fusion of ice 333 x 10³Jkg^-1] Options:
  A) 60g
  B) 67g
  C) 120g
  D) 133g
  Show Answer
  The correct answer is C .
• Question 675:

  When the downward current flows in a straight vertical conductor, the direction of its magnetic field at a point due north of the wire is

  Options:
  A) Upward
  B) North
  C) South
  D) West
  Show Answer
  The correct answer is D .
• Question 676: The pressure of one mole of an ideal gas of volume 10^-2 m³ at a temperature of 27°c is
  [molar gas constant = 8.3 J mol^-1 k^-1] Options:
  A) 2.49 x 10⁴ Nm^-2
  B) 2.24 x 10⁴ Nm^-2
  C) 2.49 x 10⁵ Nm^-1
  D) 2.24 x 10⁵ Nm^-1
  Show Answer
  The correct answer is C .
• Question 677: Which of the following is a scalar quantity? Options:
  A) Tension
  B) Weight
  C) Impulse
  D) Upthrust
  E) Distance
  Show Answer
  The correct answer is E .
• Question 678: Which gas produces a pink coloured light in a discharge tube? Options:
  A) Mercury
  B) Argon
  C) Air
  D) Neon
  Show Answer
  The correct answer is C .
• Question 679: High Tension(H.T.) transmission means Options:
  A) to transmit a given amount of power, the tension in the conducting wire must be high
  B) heat is not lost when current is passed through a conductor
  C) heat is gained when a given power is transmitted
  D) a big transformer is required to transmit power
  E) trasmission of power at low current and high voltage
  Show Answer
  The correct answer is E .
• Question 680:

  A cone is in unstable equilibrium has its potential energy

  Options:
  A) decreased
  B) increased
  C) unchanged
  D) oscillating
  Show Answer
  The correct answer is A .