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 2591: Why does a piece of cork float on water? Options:
  A) there is no upthrust on it when completely immersed in water
  B) the upthrust on it when completely immersed in water
  C) the upthrust on it when completely immersed in water is less than its weight in air
  D) its specific gravity is greater than that of water
  E) its specific gravity is the same as that of water
  Show Answer
  The correct answer is E .
• Question 2592:

  

  In the diagram above, a rod 50 cm long of uniform cross-section is suspended horizontally on a fulcrum, F, by the action of two forces. What is the weight of the rod?

  Options:
  A) 40N
  B) 80N
  C) 120N
  D) 200N
  Show Answer
  The correct answer is B .
• Question 2593: If a room is saturated with water vapour, the temperature of the room must be Options:
  A) at 0^oC
  B) above the dew point
  C) at 100^oC
  D) below or at the dew point
  Show Answer
  The correct answer is D .
• Question 2594: Which of the following pairs is an example of translucent bodies? Options:
  A) Cardboard and moon
  B) Clear water and glass
  C) Frosted glass and waxed paper
  D) Oiled paper and brick
  E) Wood and metal sheet
  Show Answer
  The correct answer is C .
• Question 2595: A wheel and axle have radii 80cm and 10cm respectively. If the efficiency of the machine is 0.85, an applied force of 1200N to the wheel will raise a load of Options:
  A) 8.0N
  B) 6.8N
  C) 8160N
  D) 9600N
  Show Answer
  The correct answer is C .
• Question 2596:

  A convex mirror is used as a driving mirror because

  I. its image is erect

  II. It has a large field of view

  III. It has a long focal length

  Identify the CORRECT statement(s)

  Options:
  A) I and III only
  B) I and II only
  C) II and IIII only
  D) I, II and III only
  Show Answer
  The correct answer is B .
• Question 2597: Flourescent tubes produces light by the Options:
  A) excitation of gas molecules
  B) conduction of solar energy
  C) refraction of light by gas molecules
  D) thermal agitation of electron in the tubes
  Show Answer
  The correct answer is A .
• Question 2598: A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire. Options:
  A) 27ms^-1
  B) 54ms^-1
  C) 90ms^-1
  D) 108ms^-1
  Show Answer
  The correct answer is A .
• Question 2599: Convert 45°C to kelvin Options:
  A) 318K
  B) 250K
  C) 184K
  D) 120K
  Show Answer
  The correct answer is A .
• Question 2600: A cell whose internal resistance is 0.5Ω delivers a current of 4A to an external resistor,The loss voltage of the cell is Options:
  A) 1.250V
  B) 2.000V
  C) 8.000V
  D) 0.125V
  Show Answer
  The correct answer is B .