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 1571: Which of the following surfaces will absorbs radiant heat energy heat? Options:
  A) white
  B) red
  C) black
  D) blue
  Show Answer
  The correct answer is C .
• Question 1572: The fundamental frequency of a plucked wire under a tension of 400N is 250Hz. When the frequency is changed to 500 Hz at constant length, the tension is Options:
  A) 1600N
  B) 400N
  C) 160N
  D) 40N
  Show Answer
  The correct answer is A .
• Question 1573: When an object is placed very close to the pole of a concave mirror, the virtual image obtained is Options:
  A) diminished and upright
  B) diminished and inverted
  C) enlarged and inverted
  D) enlarged and upright
  Show Answer
  The correct answer is D .
• Question 1574: A spring of force constant 1500Nm^-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string Options:
  A) 1.9J
  B) 2.8J
  C) 3.45J
  D) 0.43J
  Show Answer
  The correct answer is A .
• Question 1575: An orange fruit drops to the ground from the top of a tree 45m tall. How long does it takes to reach the ground? (g = 10ms^-2) Options:
  A) 3.0s
  B) 4.5s
  C) 6.0s
  D) 7.5s
  E) 9.0s
  Show Answer
  The correct answer is A .
• Question 1576: Which of the following machines does NOT apply the lever principle? Options:
  A) claw hammer
  B) wheel barrow
  C) single moving pulley
  D) sugartongs
  E) nutcrackers
  Show Answer
  The correct answer is C .
• Question 1577:

  I. The earth is not spherical but elliptical in shape

  II. Variation in latitude and longitude

  III. Rotation of the earth on its axis

  IV. Variation in the density of the earthOn which combination of the above does the weight of an object vary on the earth's surface?

  Options:
  A) I, II, III and IV
  B) II, III and IV only
  C) I, II and III only
  D) I and II only
  Show Answer
  The correct answer is D .
• Question 1578: A test tube of radius 1.0cm is loaded to 8.8g. If is placed upright in water, find the depth to which it would sink Options:
  A) 2.8cm
  B) 5.2cm
  C) 25.5cm
  D) 28.0cm
  Show Answer
  The correct answer is A .
• Question 1579: A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms ^-1, how much closer is the ship to the cliff? Options:
  A) 10m
  B) 125m
  C) 175m
  D) 350m
  E) 1,000m
  Show Answer
  The correct answer is B .
• Question 1580: The physical quantity that has the same dimensions as impulse is Options:
  A) energy
  B) momentum
  C) surface tension
  D) pressure
  Show Answer
  The correct answer is B .