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 881:

  The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage.

  Options:
  A) 400
  B) 300
  C) 200
  D) 150
  Show Answer
  The correct answer is C .
• Question 882: Which of the following statements about water is NOT correct? Options:
  A) Pure water freezes at 0°C under normal pressure
  B) The volume of a given mass of water at 0° is less than its volume at 4°C
  C) Water boils at a definite temperature
  D) Water evaporates at all temperatures
  E) Water has its maximum density at 4°C
  Show Answer
  The correct answer is D .
• Question 883:

  

  In the diagram above, a rod 50 cm long of uniform cross-section is suspended horizontally on a fulcrum, F, by the action of two forces. What is the weight of the rod?

  Options:
  A) 40N
  B) 80N
  C) 120N
  D) 200N
  Show Answer
  The correct answer is B .
• Question 884:

  

  The diagram above shows a closed side 0.5m in a uniform electric field E in the direction shown by the arrows. What is the flux Φ for the box?

  Options:
  A) 0.5 E
  B) 2.0 E
  C) 0.2 E
  D) 0.0 E
  Show Answer
  The correct answer is D .
• Question 885: When a biro pen rubbed on a dry silk cloth is moved very close to a piece of paper on a dry table, the pen is found to pick up the paper. This is because Options:
  A) both the pen and the cloth are magnetized
  B) the pen is magnetized but the cloth is not
  C) the pen is charged while the cloth is magnetized
  D) both the pen and the cloth are charged
  Show Answer
  The correct answer is D .
• Question 886: Which is a stringed Instrument? Options:
  A) drum
  B) flute
  C) piano
  D) saxophone
  E) trumpet
  Show Answer
  The correct answer is C .
• Question 887: When a brick is taken from the earth's surface to the moon, its mass Options:
  A) remains constant
  B) reduces
  C) increases
  D) becomes zero
  Show Answer
  The correct answer is A .
• Question 888: Marching soldiers crossing a suspension bridge are usually advised to break their steps to avoid damaging the bridge owing to Options:
  A) oscillation
  B) resonance
  C) swinging
  D) vibration
  Show Answer
  The correct answer is B .
• Question 889:

  

  In the circuit diagram above , the ammeter reads a current of 3A when R is 5Ω and 6A when R is 2Ω. Determine the value of x.

  Options:
  A) 8Ω
  B) 2Ω
  C) 10Ω
  D) 4Ω
  Show Answer
  The correct answer is C .
• Question 890: The electrolyte in the Nickei-iron (Nife) accumulator is Options:
  A) potassium hydroxide solution
  B) dilute tetraoxosulphate(VI)acid
  C) copper tetraoxosulphate(VI)solution
  D) ammonium chloride solution
  Show Answer
  The correct answer is A .