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 291: Which of the following statements about sound is NOT true? Options:
  A) sound is a longitudinal wave
  B) sound can be reflected and refracted like light
  C) sound travels through a vacuum
  D) sound moves faster in a steel wire than in air
  E) sound can ony be produced by vibrating objects
  Show Answer
  The correct answer is C .
• Question 292: The instrument used to view stars is the Options:
  A) Prism binoculars
  B) Telescope
  C) Film projector
  D) Microscope
  Show Answer
  The correct answer is B .
• Question 293: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 294: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 295: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 296: What is the difference in the amount of heat given out by 4kg of steam and 4kg of water when both are cooled from 100^oC to 80^oC? [the specific latent heat of steam is 2,260,000Jkg^-1, specific heat capacity of water is 4200Jkg^-1K^-1] Options:
  A) 4200J
  B) 2,260,OOOJ
  C) 9,040,000J
  D) 9,380,000J
  Show Answer
  The correct answer is C .
• Question 297:

  A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?

  [Refractive index of water = 1.33]

  Options:
  A) 13.300m
  B) 0.750m
  C) 1.013m
  D) 1.330m
  Show Answer
  The correct answer is D .
• Question 298:

  A cannon is fired from town X, after how long is the sound heard at a town Y 4.95 km away?

  [velocity of sound in the air = 330 ms^-1]

  Options:
  A) 30 s
  B) 10 s
  C) 10 s
  D) 15 s
  Show Answer
  The correct answer is D .
• Question 299:

  

  The figure above shows a uniform wood of weight 200N and length 50m. It is pivoted at one end and suspended by a cord at the other end at an angle of 30 degrees to the wood. Calculate the tension in the cord if the wood is horizontal.

  Options:
  A) 10N
  B) 20N
  C) 100N
  D) 200N
  Show Answer
  The correct answer is D .
• Question 300:

  An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductance of which is 2.5mH and the resistance of which is 5Ω. What is the power absorbed in the Coil?

  Options:
  A) 5W
  B) 6W
  C) 7W
  D) 8W
  Show Answer
  The correct answer is A .