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 461:

  The mass of a nucleus is the

  Options:
  A) total number of its proton and neutrons
  B) number of its protons
  C) mass of its electrons
  D) total number of its protons and electrons
  Show Answer
  The correct answer is A .
• Question 462:

  

  In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is correct for finding the correct value of the resistance R

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is A .
• Question 463:

  Shadows and eclipses result from the

  Options:
  A) refraction of light
  B) reflection of light
  C) defraction of light
  D) rectilinear propagation of light
  Show Answer
  The correct answer is D .
• Question 464: The r.m.s value of a supply voltage is quoted at 200v. What is the approximate peak value of the voltage? Options:
  A) 200volts
  B) 300volts
  C) 283volts
  D) 250volts
  Show Answer
  The correct answer is C .
• Question 465: The pressure of a given mass of a gas changes from 200Nm^-2 to 120Nm^-2 while the temperature drops from 127°C to -73°C. The ratio of the final volume to the initial volume is Options:
  A) 2 : 5
  B) 5 : 4
  C) 5 : 2
  D) 4 : 5
  Show Answer
  The correct answer is B .
• Question 466: An air force jet flying with a speed of 335ms^-1 went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired? Options:
  A) 838m
  B) 3350m
  C) 670m
  D) 1675m
  E) 67m
  Show Answer
  The correct answer is D .
• Question 467:

  An air bubble of radius 4.5 cm initially at a depth of 12 m below the water surface rises to the surface. If the atmospheric pressure is equal to 10.34 m of water, the radius of the bubble just before it reaches the water surface is

  Options:
  A) 6.43 cm
  B) 8.24 cm
  C) 4.26 cm
  D) 5.82 cm
  Show Answer
  The correct answer is D .
• Question 468: When a man moves toward a plane mirror at a speed of 6m/s, the distance the man and his image increased at a speed of? Options:
  A) 2 m/s
  B) 4 m/s
  C) 12 m/s
  D) 14 m/s
  Show Answer
  The correct answer is C .
• Question 469: Two capacitors R₁ = 4$\mathrm{\Omega }$ and R₂ = 5$\mathrm{\Omega }$ are connected in parallel across a potential difference. If P₁ and P₂ represent power dissipated in R ₁ and R₂ respectively, then the ratio P₁ : P₂ is Options:
  A) 4 : 5
  B) 5 : 4
  C) 16 : 25
  D) 25 : 16
  Show Answer
  The correct answer is B .
• Question 470: Which of the following will be applied when a metal Y is used to electroplate another metal X in electrolysis? Options:
  A) X is the anode and very high current is used
  B) X is the anode and Y is the cathode
  C) Y is the cathode and X is the anode
  D) Y is the anode and very high current is used
  Show Answer
  The correct answer is D .