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 1321: At what frequency would a 10H inductor have a reactance of 2000Ω? Options:
  A) π/200Hz
  B) π/100Hz
  C) 100/πHz
  D) 100πHz
  Show Answer
  The correct answer is C .
• Question 1322: A load of 20N on a wire of cross-sectional area 8 x 10^-7m², produces an extension of 10m². calculate Young's modulus for the material of the wire if its length is 3m Options:
  A) 7.0 x 10¹¹Nm^-2
  B) 7.5 x 10¹¹Nm^-2
  C) 8.5 x 10¹¹Nm^-2
  D) 9.0 x 10¹¹Nm^-2
  Show Answer
  The correct answer is B .
• Question 1323: Calculate the force acting on an electron of charge 1.6 x 10^-19C placed in an electric field of intensity 10⁸Vm^-1 Options:
  A) 1.6 x 10^-11N
  B) 1.6 x 10^-14N
  C) 1.6 x 10^-16N
  D) 1.0 x 10^-16N
  Show Answer
  The correct answer is A .
• Question 1324: A metal block of mass 5kg lies on a rough horizontal platform. If a horizontal force of 8N applied to the block through its center of mass just slides the block on the platform, then the coefficient of limiting friction between the block and platform is Options:
  A) 0.16
  B) 0.63
  C) 0.80
  D) 1.60
  E) 2.00
  Show Answer
  The correct answer is A .
• Question 1325: A current carrying conductor experiences a force when placed in a magnetic field because the Options:
  A) conductor is magnetized
  B) magnetic field of the current interacts with external magnetic field
  C) force is due to the motor principle
  D) electric field of the current interacts with the external magnetic field
  Show Answer
  The correct answer is B .
• Question 1326:

  A missile is launched with a speed of 75 ms-1 at an angle of 22° above the surface of a warship. Find the horizontal range achieved by the missile. Ignore the effects of air resistance.

  [Take g = 10 ms-2]

  Options:
  A) 195
  B) 271 m
  C) 391 m
  D) 136 m
  Show Answer
  The correct answer is C .
• Question 1327:

  The limiting frictional force between two surfaces depends on

  I. the normal reaction between the surfaces

  II. the area of surface in contact

  III. the relative velocity between the surfaces

  IV. the nature of the surfaces

  Options:
  A) I only
  B) II only
  C) III only
  D) I and IV only
  Show Answer
  The correct answer is D .
• Question 1328:

  

  The circuit diagram above contains four ammeters W, X, Y and Z, Which of the following statements about the ammeter readings is correct

  Options:
  A) The reading of W is equal to that of Y and twice that of X
  B) The reading of Y is greater than that of Z
  C) The readings of W and Y are equal and each is greater than that of X
  D) The reading of Z is equal to the sum of the readings of Y and W
  Show Answer
  The correct answer is C .
• Question 1329:

  

  In the figure above, what is the angle of reflection of the ray of light at mirror M?

  Options:
  A) ${90}^{\circ }$
  B) ${60}^{\circ }$
  C) ${45}^{\circ }$
  D) ${30}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1330: A liquid of mass 1.0 x 10³kg fills a rectangular tank of length 2.5m and width 2.0m. If the tank is 4m high, what is the pressure at the middle of the tank?[g = 10ms^-2] Options:
  A) 1.0 x 10⁴Nm^-2
  B) 2.0 x 10³Nm^-2
  C) 1.5 x 10³Nm^-2
  D) 1.0 x 10³Nm^-2
  Show Answer
  The correct answer is D .