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 1021: The kinetic theory of photoelectron liberated from a metallic surface depends on the Options:
  A) intensity of the incident radiation
  B) time duration of the incident radiation
  C) temperature of the incident radiation
  D) frequency of the incident radiation
  Show Answer
  The correct answer is D .
• Question 1022:

  When a water droplet is placed on a freshly cut piece of wood, it spreads out to form a thin layer because the wood is

  Options:
  A) not at equilibrium with the water
  B) cohesive to water
  C) at equilibrium with the water
  D) adhesive to water
  Show Answer
  The correct answer is D .
• Question 1023: A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is Options:
  A) 200 Ω
  B) 50 Ω
  C) 100/π Ω
  D) 25/π Ω
  Show Answer
  The correct answer is A .
• Question 1024:

  The statement 'Heat lost by the hot body equals that gained by the cold one' is assumed when determining specific that heat capacity by the method of mixtures. Which of the following validates the assumption?

  I. Lagging the Calorimeter

  II. Ensuring that only S.I units are used

  III. Weighing the calorimeter, the lid and the stirrer.

  Options:
  A) I only
  B) I and II only
  C) I and III only
  D) II and III only
  Show Answer
  The correct answer is C .
• Question 1025: 491 K is equivalent to Options:
  A) 273 °C
  B) 218 °C
  C) 373 °C
  D) 491 °C
  E) 764 °C
  Show Answer
  The correct answer is B .
• Question 1026: An electric water pump rate 1.5 kW, lifts 200kg of water through a vertical height of 6 meters in seconds. What is the efficiency of the pump? [g = 10ms^-2, neglecting air resistance] Options:
  A) 90.0%
  B) 85.0%
  C) 80.0%
  D) 65.0%
  Show Answer
  The correct answer is C .
• Question 1027: The difference of potential between the terminals of cells is 2.2 volts. When a 4ohm resistor is connected across the terminals of this cells, the potential difference is 2 volts. What is the internal resistance of the cell? Options:
  A) 0.10 ohms
  B) 0.25ohms
  C) 0.40ohms
  D) 2.50ohms
  E) 4.00ohms
  Show Answer
  The correct answer is C .
• Question 1028: Which of the following statements is true of the properties of a moving coil galvanometer? Options:
  A) THe coil has a small area
  B) There are strong hair springs to gives a large control panlel
  C) There is a strong permanent magnet to give high magnetic flux
  D) it has a small number of turns of coil
  Show Answer
  The correct answer is C .
• Question 1029:

  

  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 1030:

  Which of the following media allow the transmission of sound waves through them?

  I. air

  II. liquid

  III. solids

   

  Options:
  A) I and II only
  B) I and III only
  C) II and III only
  D) I, II and III
  Show Answer
  The correct answer is D .