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 41:

  When the plate area of a capacitor increases?

  Options:
  A) the voltage can withstand increase
  B) the capacitance decreases
  C) the capacitance is unaffected
  D) the capacitance increases
  Show Answer
  The correct answer is D .
• Question 42:

  

  In the AC circuit diagram above, the resonance frequency is

  Options:
  A) 5000π Hz
  B) 2500π Hz
  C) 5000/π Hz
  D) 2500/π Hz
  Show Answer
  The correct answer is D .
• Question 43:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 44: A piece of wood of mass 40g and uniform cross-sectional area of 2cm² floats upright in water. The length of the wood immersed is Options:
  A) 30cm
  B) 40cm
  C) 20cm
  D) 2cm
  Show Answer
  The correct answer is C .
• Question 45: An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is Options:
  A) 15.0 ms^-1
  B) 7.5 ms^-1
  C) 3.8 ms^-1
  D) 3.0 ms^-1
  Show Answer
  The correct answer is D .
• Question 46:

  

  The internal resistance of each of the cells E1 and E2 Shown in the figure above is 2 Ohm. Calculate the total current in the circuit

  Options:
  A) 0.80A
  B) 0.50A
  C) 0.40A
  D) 0.004A
  Show Answer
  The correct answer is C .
• Question 47: Ripples on water and light waves are similar because both Options:
  A) have the same frequency
  B) can be refracted and diffracted
  C) are longitudinal waves
  D) have the same velocity
  Show Answer
  The correct answer is C .
• Question 48: The optical instrument which is suitable for viewing a nearby objects is ………..? Options:
  A) Telescope
  B) sextant
  C) microscope
  D) periscope
  Show Answer
  The correct answer is C .
• Question 49: Which of the following elements are real magnetic materials? Options:
  A) Iron, steel and nickel
  B) copper, steel and iron
  C) lead, iron and brass
  D) glass, lead and steel
  E) stone, air and iron
  Show Answer
  The correct answer is A .
• Question 50: The thermal expansion of a solid is an advantage in Options:
  A) Balance wheel of a watch
  B) Construction of steel rail lines
  C) Construction of large steel bridges
  D) Fitting of tyres on wheels
  Show Answer
  The correct answer is A .