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 1491: When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is Options:
  A) 2 A
  B) 3 A
  C) 4 A
  D) 5 A
  Show Answer
  The correct answer is C .
• Question 1492: The d.c generator has essentially the same components as the a.c generator except the presence of? Options:
  A) slip-ring
  B) carbon brushes
  C) split ring
  D) armature
  Show Answer
  The correct answer is C .
• Question 1493:

  The differences observed in solids, liquids and gases may be accounted for by

  Options:
  A) their relative masses
  B) their melting points
  C) the spacing and forces acting between the molecules
  D) the different molecules in each of them
  Show Answer
  The correct answer is C .
• Question 1494: A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)? Options:
  A) The power dissipated in L is greater than zero
  B) The power dissipated in R is zero
  C) The sum of the power dissipated in L and C is equal to that in R
  D) The sum of the power dissipated in L and C is greater than in R
  E) The sum of the power dissipated in L and C is zero
  Show Answer
  The correct answer is E .
• Question 1495: Which of the following statements is Not true about atoms? Options:
  A) Atom of different elements have different atomic weights
  B) The mass of an atom is concentrated in the nucleus
  C) An atom is made up of a nucleus and number of electrons
  D) Atoms of all elements are identical
  Show Answer
  The correct answer is D .
• Question 1496: The hydrostatic blood pressure difference between the head and the feet of a boy standing straight is 1.65 x 10⁴ Nm^-2. Find the height of the boy. Options:
  A) 0.5 m
  B) 0.6 m
  C) 1.5 m
  D) 2.0 m
  Show Answer
  The correct answer is C .
• Question 1497: Efficiency of a transformer is equal to Options:
  A) Efficiency of transformer = (secondary coil ÷ primary coil) × 100%
  B) Efficiency of transformer = (mechanical advantage ÷ velocity ratio) × 100%
  C) Efficiency of a transformer = (Number of turns in the secondary coil ÷ Number of turns in the primary coil) × 100%
  D) Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%
  Show Answer
  The correct answer is D .
• Question 1498: 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 1499: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 1500: Two 2.0Ω resistors can be combined circuit to give an overall resistance of Options:
  A) 0.5Ω only
  B) 1.0 Ω only
  C) either 0,5Ω or 1.0 Ω
  D) either 1.0Ω or 4.0 Ω
  E) either 0.5Ω, 1.0Ω or 4.0Ω
  Show Answer
  The correct answer is D .