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 1671:

  The part of the human eye that does similar work as the diaphragm of a camera lens is the

  Options:
  A) Ciliary muscles
  B) Pupil
  C) Iris
  D) Retina
  Show Answer
  The correct answer is C .
• Question 1672: Which of the following statements is TRUE of photoelectric effect? Options:
  A) it cannot occur in liquids
  B) the energy of the emitted electrons is independent of the work function of the surface
  C) the energy of the emitted electron depends on the wavelength of the incident light
  D) the greater the intensity of the incuident light, the greater the incident of the emitted electron
  Show Answer
  The correct answer is A .
• Question 1673: a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds? Options:
  A) 4ms^-1
  B) 10ms^-1
  C) 20ms^-1
  D) 50ms^-1
  E) 80ms^-1
  Show Answer
  The correct answer is C .
• Question 1674:

  A cell gives a current of 0.15A through a resistance of 8$\mathrm{\Omega }$ and 0.3A. When the resistance is changed to 3$\mathrm{\Omega }$ the internal resistance of the cell is

  Options:
  A) 0.05$\mathrm{\Omega }$
  B) 1.00$\mathrm{\Omega }$
  C) 1.50$\mathrm{\Omega }$
  D) 2.00$\mathrm{\Omega }$
  E) 2.50$\mathrm{\Omega }$
  Show Answer
  The correct answer is D .
• Question 1675: A metal cube of volume 10³mm³ is lowered into a measuring cylinder containing water. If the internal cross-sectional area of the cylinder is 1.5 x 10²mm², by how much does the water level rise in the cylinder? Options:
  A) 6.67 x 10⁰mm
  B) 8.50 x 10²mm
  C) 1.15 x 10³mm
  D) 2.50 x 10³mm
  E) 1.50 x 10⁵mm
  Show Answer
  The correct answer is A .
• Question 1676: 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 1677: 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 1678: An electron makes a transition from - 1.60 eV energy level to - 10.4eV energy level Calculate the energy loss due to the transition. Options:
  A) 16.64eV
  B) 12.00eV
  C) 10.40eV
  D) 8.80eV
  E) 6.50eV
  Show Answer
  The correct answer is D .
• Question 1679:

  

  In the above circuit, The fuse wire melts when

  Options:
  A) K is Opened
  B) K is closed
  C) the 14 ohm resistor is doubled with k closed
  D) the 6 ohm resistor is doubled with k closed
  Show Answer
  The correct answer is B .
• Question 1680:

  Any line or section taken through an advancing wave in which all the particles are in the same phase is called the

  Options:
  A) wavelength
  B) wave coast
  C) wave trough
  D) wave front
  Show Answer
  The correct answer is D .