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 2701: A ball is moving at 18ms^-1 in a direction inclined at 60^o to the horizontal. The horizontal component to its velocity is Options:
  A) 9√3ms^-1 ·
  B) 6√3ms^-1 ·
  C) 8√3ms^-1 ·
  D) 9ms^-1 ·
  Show Answer
  The correct answer is D .
• Question 2702: Which of the following instrument is most accurately for comparing electromotive force (e.m.f) of two cells? Options:
  A) Voltmeter
  B) Meter rule
  C) Galvanometer
  D) Potentiometer
  Show Answer
  The correct answer is D .
• Question 2703: A parallel plate capacitor has a common plate area of 5 x 10^-8m² and plate separation of 2 x 10³m, Assuming free space, What is the capacitance? [$\epsilon$_o = 9.0 X 10^-12C²N^-1m^-2] Options:
  A) 2.25 x 10^-17F
  B) 4.50 x 10^-17F
  C) 2.25 x 10^-16F
  D) 4.50 x 10^-16F
  Show Answer
  The correct answer is C .
• Question 2704: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 2705: A force of 15N stretches a spring to a total length of 30cm. An additional force of 10N stretches the spring 5cm further. Find the natural length of the spring Options:
  A) 25.0cm
  B) 22.5cm
  C) 20.0cm
  D) 15.0cm
  Show Answer
  The correct answer is B .
• Question 2706: If the mechanical advantage of a machine is 4. What is its ratio for LOAD to EFFORT? Options:
  A) 4:01
  B) 1:04
  C) 5:01
  D) 2:01
  Show Answer
  The correct answer is A .
• Question 2707: An ice cube floats in a glass of water filled to the brim. What happens when the ice melts? Options:
  A) The water level remains the same
  B) there is a drop in the level of water in the glass due to condensation on its outside
  C) the water in the glass overflows
  D) the level of water drops because melted ice occupies less volume
  E) none of the above is correct
  Show Answer
  The correct answer is A .
• Question 2708:

  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 2709: A p-n junction diode is used as? Options:
  A) a rectifier in a d.c circuit
  B) an amplifier in d.c circuit
  C) an anplifier in an a.c circuit
  D) a rectifier in an a.c circuit
  Show Answer
  The correct answer is D .
• Question 2710: A transistor is used in the amplification of signals because it Options:
  A) controls the flow of current
  B) consumes a lot of power
  C) allows doping
  D) contains electron and hole carriers
  Show Answer
  The correct answer is A .