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 581: The angle between the direction of the earth's magnetic field and the horizontal is called the Options:
  A) angle of deviation
  B) magnetic declination
  C) magnetic meridian
  D) angle of dip
  Show Answer
  The correct answer is D .
• Question 582:

  If the frequency of an emitted x-ray is 1.6 x 10¹⁶Hz, the accelerating potential is?

  [e = 1.6 x 10^-19C, h = 6.63 x 10^-34Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 583:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .
• Question 584: The phenomenon that shows that increase in pressure lowers the melting point can be observed in Options:
  A) sublimation
  B) condensation
  C) coagulation
  D) regelation
  Show Answer
  The correct answer is D .
• Question 585: Which of the following is in a neutral equilibrium? Options:
  A) a heavy weight suspended on a string
  B) a cone resting on its slant edge
  C) a heavy-based table lamp
  D) the beam of a balance in use
  Show Answer
  The correct answer is B .
• Question 586: A conductor has a diameter of 1.00 mm and length 2.00m. if the resistance of the material is 0.1Ω, its resistivity is? Options:
  A) 2.55 x 10⁵ Ωm
  B) 2.55 x 10² Ωm
  C) 3.93 x 10^-6 Ωm
  D) 3.93 x 10^-8 Ωm
  Show Answer
  The correct answer is D .
• Question 587: An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror, the number of images formed is Options:
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5
  Show Answer
  The correct answer is C .
• Question 588:

  

  In the diagram above, which of the simple pendula will resonate with P when set into oscillation

  Options:
  A) T
  B) U
  C) R and T
  D) Q and R
  Show Answer
  The correct answer is A .
• Question 589: The general gas law can be written as Options:
  A) PV ÷ T = a constant
  B) PV = a constant
  C) v/t = a constant
  D) p/T = a constant
  Show Answer
  The correct answer is A .
• Question 590: The electrochemical equivalent of platinum is 5.0 x 10^-7kgC^-1 to plate-out 1.0kg of platinum, a current of 100A must be passed through an appropriate vessel for Options:
  A) 5.6 hours
  B) 56 hours
  C) 1.4 x 10^{4 hours}
  D) 2.0 x 10^{4 hours}
  Show Answer
  The correct answer is A .