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 1381: A well-lagged bar of length 100cm has its ends maintained at 100^oC and 40^oC respectively. What is the temperature at a point 60cm from the hotter end? Options:
  A) 58^oC
  B) 62^oC
  C) 64^oC
  D) 76^oC
  Show Answer
  The correct answer is D .
• Question 1382: At what depth below the sea-level would one experience a change of pressure equal to one atmosphere? Density of sea water = 1013kg^-3, one atmosphere = 0.01 x 10⁵Nm^-2, g = 10ms^-2 Options:
  A) 0.1m
  B) 1.0m
  C) 10.0m
  D) 100.0m
  Show Answer
  The correct answer is C .
• Question 1383: Which of the following is the most suitable for use as an altimeter? Options:
  A) A mecury barometer
  B) A fortin barometer
  C) A mecury manometer
  D) An aneroid barometer
  Show Answer
  The correct answer is D .
• Question 1384: Which of the following is true of sounds? Options:
  A) sound travels faster in air at 20^oC than at 30^oC
  B) the frequency of a given sound wave changes when it crosses the boundary seperating two media
  C) the wavelength of a given sound wave in air decreases as the temperature increases
  D) sound waves cannot be reflected
  Show Answer
  The correct answer is C .
• Question 1385: The symbol ₋₁⁰X used to represent which of the particles? Options:
  A) Proton
  B) Neutron
  C) Electrons
  D) Atoms
  Show Answer
  The correct answer is C .
• Question 1386: Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them. What is the total current in the circuit? Options:
  A) 14 A
  B) 12 A
  C) 10 A
  D) 8 A
  Show Answer
  The correct answer is B .
• Question 1387:

  

  The figure above shows a conductor PQ carrying a current I in the direction shown. At a particular position near the conductor is a compass needle K. Neglecting the earth's magnetic field, the compass needle will

  Options:
  A) settle in any direction
  B) settle in a fixed direction only if the conductor PQ is a magnetic material
  C) settle in a fixed direction WHETHER the conductor PQ is a magnetic material OR NOT
  D) be stationary
  Show Answer
  The correct answer is C .
• Question 1388: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
  Show Answer
  The correct answer is C .
• Question 1389:

  Musical instruments playing the same note can be distinguished from one another owing to the difference in their

  Options:
  A) quality
  B) pitch
  C) intensity
  D) loudness
  Show Answer
  The correct answer is A .
• Question 1390: The volume of a fixed mass of gas is 10cm³ when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg. Options:
  A) 30cm³
  B) 40cm³
  C) 50cm³
  D) 20cm³
  Show Answer
  The correct answer is D .