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 141:

  

  A body of mass 40kg is being dragged along the floor by a rope inclined at 60 degrees to the horizontal. The frictional force between the box and the floor is 100N and the tension on the rope is 300N. How much work is done by dragging the box for a distance of 4m

  Options:
  A) 680J
  B) 400J
  C) 200J
  D) 100J
  Show Answer
  The correct answer is C .
• Question 142: Three 5 ohms resistors connected in parallel have a potential difference of 60v. applied across the combination. The current in each resistor is Options:
  A) 4A
  B) 36A
  C) 12A
  D) 24A
  E) 10A
  Show Answer
  The correct answer is C .
• Question 143:

  118.8cm² surface of the copper cathode of a voltameter is to be coated with 10^-6m thick copper of density 9 x 10³kgm^-3. How long will the process run with 10A constant current?

  [3.3 x 10^-7kgC^-1]

  Options:
  A) 5.4 min
  B) 10.8 min
  C) 15.0 min
  D) 20.0 min
  Show Answer
  The correct answer is A .
• Question 144: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 145: what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside? Options:
  A) the glass will break
  B) the glass will shrink
  C) the liquid will rise up in the stem
  D) the liquid will go down in the stem
  Show Answer
  The correct answer is D .
• Question 146: 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 147: Which of the following can conduct electricity owing to the presence of free mobile electrons? Options:
  A) germanium
  B) silicon
  C) grapefruit
  D) copper
  Show Answer
  The correct answer is D .
• Question 148:

  

  The diagram above shows a velocity - time graph. The statement that is true about this motion is that the car

  Options:
  A) has no acceleration between point F and G
  B) decelerates between F and H
  C) has a constant soeed between points E and F
  D) Accelerates between points F and G
  Show Answer
  The correct answer is A .
• Question 149: Volatile liquids usually Options:
  A) Have high boiling points
  B) have low boiling points
  C) have high densities
  D) have high melting points
  Show Answer
  The correct answer is B .
• Question 150:

  A body moves along a circular path with uniform angular speed of 0.6 rad s^-1 and at a constant speed of 3.0 ms^-1. Calculate the acceleration of the body towards the centre of the circle.

  Options:
  A) 0.2.ms^-2
  B) 1.8 ms^-2
  C) 5.0 ms^-2
  D) 5.4 ms^-2
  E) 25.0 ms^-2
  Show Answer
  The correct answer is B .