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 2411: A galvanometer of internal resistance 50$\mathrm{\Omega }$ has a full scale deflection for a current of 5mA. What is the resistance required to covert it to a voltmeter with full scale deflection of 10V? Options:
  A) 1750$\mathrm{\Omega }$
  B) 1950$\mathrm{\Omega }$
  C) 2000$\mathrm{\Omega }$
  D) 2500$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 2412:

  The resultant capacitance in the figure above is

  Options:
  A) 0.4μf
  B) 0.8μf
  C) 1.8μf
  D) 4.5μf
  Show Answer
  The correct answer is B .
• Question 2413: Which of the following is a secondary colour Options:
  A) blue
  B) orange
  C) red
  D) green
  Show Answer
  The correct answer is B .
• Question 2414:

  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 2415: An electric cell has an internal resistance of 2 ohms. A current of 0.5A is found to flow when a resistor of 5 ohms resistance is connected across it. What is the electromotive force of the cell? Options:
  A) 5 volts
  B) 3.5 volts
  C) 2.5 volts
  D) 1 volts
  E) 10 volts
  Show Answer
  The correct answer is B .
• Question 2416: Which of the following electromagnetic waves has the shortest wavelength? Options:
  A) Radio waves
  B) X-rays
  C) Infra-red
  D) Blue light
  E) Ultraviolet
  Show Answer
  The correct answer is B .
• Question 2417: What is the S.I unit of relative density? Options:
  A) kg m^-2
  B) kg m²
  C) kg cm³
  D) has no S.I unit
  Show Answer
  The correct answer is D .
• Question 2418: A lamp is rated 240V 60W, calculate the resistance of its filament Options:
  A) 240$\mathrm{\Omega }$
  B) 360$\mathrm{\Omega }$
  C) 960$\mathrm{\Omega }$
  D) 1440$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 2419: The wave theory of light does not explain photoelectricity because Options:
  A) light waves carry little energy
  B) particles cannot be emitted by waves
  C) the frequency of light waves too high
  D) there is a threshold wavelength for electron emission
  E) the wavelength of Light waves is too short.
  Show Answer
  The correct answer is A .
• Question 2420: The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals? Options:
  A) 4V
  B) 8V
  C) 16V
  D) 200V
  E) 4000V
  Show Answer
  The correct answer is E .