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 1311: the ratio of electrostatic force F_E to gravitational force F_G between two protons each of charge e and mass m, at a distance d is Options:
  A) e/4πԐoGm
  B) e²/Gm²
  C) Gm²/4πԐoe²
  D) e²/4πԐoeGm²
  Show Answer
  The correct answer is D .
• Question 1312: A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is Options:
  A) 0.2N
  B) 0.8N
  C) 3.2N
  D) 8.0N
  Show Answer
  The correct answer is B .
• Question 1313:

  I. High thermal capacity.

  II. High sensitivity.

  III.Easy readability.

  IV. Accuracy over a wide range of temperature

  From the statement above, the qualities of a good thermometer are

  Options:
  A) I and II
  B) I, II,III and IV
  C) I, III and IV
  D) II, III and IV
  Show Answer
  The correct answer is D .
• Question 1314: The angular dispersion of a prism depends on Options:
  A) the index of refraction only
  B) the angle of incidence as well as the index of refraction
  C) the angle of incidence only
  D) the thickness of the prism
  E) the prism angle
  Show Answer
  The correct answer is A .
• Question 1315: Which of the following statements give the TRUE difference between evaporation and boiling? i. Evaporation occurs at all temperatures while boiling occurs at a fixed temperature for a given pressure. ii. Evaporation is a surface phenomenon while boiling is an interior phenomenon. iii. Evaporation is affected by surface area while boiling is not. Options:
  A) i and ii only
  B) i and iii only
  C) ii and iii only
  D) i, ii, iii.
  Show Answer
  The correct answer is D .
• Question 1316: Which of the following is the correct definition of 'half-life'? Options:
  A) the average life-time of a radioactive material
  B) the time it takes a radioactive material to decay to half of its original quantity
  C) half the period a radioactive material decays completely
  D) half of the decay constant
  E) the decay constant times life-time
  Show Answer
  The correct answer is B .
• Question 1317:

  A man will exert the greatest pressurewhen he?

  Options:
  A) lies flat on his back
  B) lies on his belly
  C) stands on both feet
  D) stands on the toes of one foot
  Show Answer
  The correct answer is D .
• Question 1318: A calorimeter of thermal capacity 80J contains 20g of water at 25^oC. Water at 100^oC is added so that the final temperature of the set-ups is 50^oC. The amount of water added is (Heat capacity of water = 4.18J/g/^oC) Options:
  A) 20g
  B) 25g
  C) 45g
  D) 50g
  E) 100g
  Show Answer
  The correct answer is A .
• Question 1319: If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is? Options:
  A) 25%
  B) 33%
  C) 75%
  D) 82%
  Show Answer
  The correct answer is C .
• Question 1320: The particles emitted when ${}_{19}^{39}K{\text{ decay to }}_{19}^{39}K$ is Options:
  A) gamma
  B) beta
  C) electron
  D) alpha
  Show Answer
  The correct answer is A .