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 1251:

  

  The wire X in the figure above is at right angles to the plane of the paper and carries a current into the paper. at which of the points labelled 1-4, will the magnetic flux density due to this current be in the same direction as that of the horizontal component of earth's magnetic field

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 1252: Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length Options:
  A) 12.4 m
  B) 15.7 m
  C) 17.5 m
  D) 18.6 m
  Show Answer
  The correct answer is B .
• Question 1253:

  Which of the following statement about the electromagnet shown above is correct?

  Options:
  A) when the current flows from A to B, the end A will be in north pole
  B) when the current flows from A to B, the end A will be south pole
  C) when the current flows from A to B, the end B will be north pole
  D) none of the above
  Show Answer
  The correct answer is B .
• Question 1254:

  

  A force varying linearly with the distance acts on a body as shown above, The work done on the body by the force during the first 10m of motion is

  Options:
  A) 100J
  B) 150J
  C) 200J
  D) 300J
  E) 600J
  Show Answer
  The correct answer is A .
• Question 1255: In A.C circuit theory, the root means square (r.m.s) current, I_rms and the peak (maximum)current I_o are related by Options:
  A) I_o = $\frac{I_{r}ms}{\sqrt{2}}$
  B) I_rms = $\frac{I_o}{\sqrt{2}}$
  C) I_rms = $\frac{\frac{I}{I_o}}{\sqrt{2}}$
  D) I_rms = $\frac{I_{r}ms}{\sqrt{2}}$
  Show Answer
  The correct answer is B .
• Question 1256: The terminal velocity of a ball-bearing falling through a viscous fluid reached when the Options:
  A) upthrust is equal to the weight of the ball
  B) ball accelerate uniformly
  C) upthrustis equal to the velocity of the ball
  D) velocity is uniform
  Show Answer
  The correct answer is D .
• Question 1257: Which of the following properties is/are common to all waves? i. Diffraction ii. Refraction iii. Interference Options:
  A) i only
  B) ii only
  C) ii and iii
  D) i, ii, and iii
  Show Answer
  The correct answer is D .
• Question 1258: 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 1259:

  A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  Options:
  A) no charge and a zero potential
  B) a positive charge and a zero potential
  C) a negative charge and a positive potential
  D) a negative charge and a negative potential
  Show Answer
  The correct answer is D .
• Question 1260:

  

  In fig 9 the value of R is

  Options:
  A) 3Ω
  B) 4Ω
  C) 5Ω
  D) 6Ω
  Show Answer
  The correct answer is D .