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 1681: Two strings of the same length and under the same tension gives notes of frequencies in the ratio 4 : 1. The masses of the strings are in the corresponding ratio of Options:
  A) 2 : 1
  B) 1 : 2
  C) 1 : 4
  D) 1 : 16
  Show Answer
  The correct answer is B .
• Question 1682:

  A safety precaution designed to prolong the life of a lead acid accumulator is

  Options:
  A) By topping up the cells with concentrated acid
  B) The use of naked flame when charging the battery
  C) Keeping the specific gravity of the electrolyte within specified range
  D) By connecting wires to the terminals directly when testing the level of charging
  Show Answer
  The correct answer is C .
• Question 1683: Lodestone is a natural magnet, it points at Options:
  A) N – W when suspended freely
  B) N–S when suspended freely
  C) S – E when suspended freely
  D) S–W when suspended freely
  Show Answer
  The correct answer is B .
• Question 1684:

  Which component of fiber-optic connector has a provision of entry for the fibre along with the fixationto connector housing?

  Options:
  A) coupling device
  B) cable
  C) ferrule
  D) connector housing
  Show Answer
  The correct answer is A .
• Question 1685: The specific latent heat of vaporization of a substance is always Options:
  A) less than its specific latent heat of fusion
  B) greater than its specific heat of fusion
  C) equal to its specific latent heat of fusion
  D) all of the above depending on the nature of the substance
  E) none of the above
  Show Answer
  The correct answer is B .
• Question 1686: Which of the following are produced after a nuclear fusion process? i. one heavy nucleus. ii. neutrons^-1. iii. protons. iv. Energy. Options:
  A) i and ii
  B) i and iv
  C) ii and iii
  D) ii and iv
  Show Answer
  The correct answer is B .
• Question 1687:

  A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium

  Options:
  A) an increase in the kinetic energy of the body
  B) an increase in the potential energy of the body
  C) a decrease in the kinetic energy of the body
  D) an increase in the height of the body
  Show Answer
  The correct answer is B .
• Question 1688: A plane inclined at an angle at 30^o to the horizontal has an efficiency of 50%. The force parallel to the plane required to push a load of 120 N uniformly up the plane is Options:
  A) 40√3N
  B) 60N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is C .
• Question 1689: If the velocity ratio of a machine is 5. What is its ratio of x and y? Options:
  A) 2 : 5
  B) 1 : 5
  C) 5 : 1
  D) 3 : 1
  Show Answer
  The correct answer is C .
• Question 1690: Boyle’s law may be Witten as Options:
  A) P1V1= P2V2
  B) V1 = V2 ÷ T1T2
  C) P1T1 = P2T2
  D) P1V1 ÷ T1 = P1V1 ÷ T2
  Show Answer
  The correct answer is A .