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 591: Which statement is NOT correct about molecules? Options:
  A) The number of molecules in a unit volume of a solid is greater than that in a unit volume of a liquid or gas.
  B) Molecules are made up of atoms
  C) The force of attraction between two molecules of a solid is greater than that between two molecules of a liquid or gas
  D) Molecules of gases are in regular motion
  E) Molecules of a solid vibrate about their mean positions.
  Show Answer
  The correct answer is D .
• Question 592: An astronaut is walking on the moon where the magnitude of the acceleration due to gravity "g’ is one-sixth that on earth. Compared with their magnitudes on the earth, his mass and weight on the moon are Options:
  A) both less
  B) less and the same respectively
  C) the same and less respectively
  D) the same as on earth
  E) both greater.
  Show Answer
  The correct answer is C .
• Question 593: An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is Options:
  A) mg
  B) (m + pv)g
  C) (m - pv)g
  D) pvg
  E) [M/m-pv]g
  Show Answer
  The correct answer is C .
• Question 594:

  

  Four resistors R1, R2, R3 and R4 are connected in series as shown above, V1, V2, V3 are voltmeters connected as indicated above. Which of the following relations is correct??

  Options:
  A) V1 = V3 =V2/2
  B) V1 = 2V2 = V3
  C) V1=1/2V3 =V3
  D) V2 - V1 = V3
  Show Answer
  The correct answer is A .
• Question 595: A step-down transformer has a power output of 50 W and efficiency of 80%. if the mains supply voltage is 200 v, calculate the primary current of the transformer. Options:
  A) 0.31 A
  B) 3.20 A
  C) 3.40 A
  D) 5.00 A
  Show Answer
  The correct answer is A .
• Question 596:

  

  What is the reading of the vernier calipers shown above?

  Options:
  A) 1.79cm
  B) 1.73cm
  C) 1.39cm
  D) 1.34cm
  Show Answer
  The correct answer is C .
• Question 597: A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point T. What is the total displacement? Options:
  A) 6km south
  B) 4km north
  C) 6km north
  D) 4km east
  Show Answer
  The correct answer is B .
• Question 598:

  A relative density bottle has a mass of 19 g when empty. When it is completely filled with water, its mass is 66 g. What will be its mass if completely filled with alcohol of relative density 0.8?

  Options:
  A) 47 g
  B) 52.8 g
  C) 37.6 g
  D) 56.6 g
  Show Answer
  The correct answer is D .
• Question 599:

  The working of the beam balance is based on the principle of

  Options:
  A) moments
  B) conservation of energy
  C) equivalence
  D) floatation
  Show Answer
  The correct answer is A .
• Question 600: an electric cell with nominal voltage E has a resistance of 3Ω connected across it. If the voltage falls to 0.6E, the internal resistance of the cell is Options:
  A) 1Ω
  B) 2Ω
  C) 3Ω
  D) 4Ω
  Show Answer
  The correct answer is C .