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 701: 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 702: The surfaces of conveyor belts are made rough so as to Options:
  A) protect them while carrying loads
  B) prevent the loads from slipping
  C) enable them to carry more load
  D) make them stronger
  Show Answer
  The correct answer is B .
• Question 703: 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 704: 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 705: A bread toaster uses a current of 4A when plugged in a 24oV line. it takes 1 minute to toast slices of bread. what is the energy consumed by the toaster Options:
  A) 5.76 x 10⁴J
  B) 1.60 x 10⁴J
  C) 3.60 x 10³J
  D) 1.60 x 10²J
  Show Answer
  The correct answer is A .
• Question 706: Two inductors of inductance 4 II and 8 II are arrange in series and a current of 10 A is passed through them. What is the energy stored in them? Options:
  A) 500 J
  B) 50 J
  C) 133 J
  D) 250 J
  Show Answer
  The correct answer is C .
• Question 707: The image is a plane mirror is Options:
  A) inverted, real with a magnificant of $\frac{1}{2}$
  B) inverted, virtual with a magnification of 1
  C) inverted, real with a magnification of 2
  D) upright, virtual with a magnificent of 1
  E) upright, real with a magnification of 2
  Show Answer
  The correct answer is D .
• Question 708: Alternating current can induce voltage because it has a Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) stonger magnetic field than direct current
  E) high peak value
  Show Answer
  The correct answer is D .
• Question 709: A surface in the path of an advancing wave on which all the particles are in the same state of disturbance is called a Options:
  A) crest
  B) cycle
  C) pulse
  D) trough
  E) wave front
  Show Answer
  The correct answer is E .
• Question 710:

  

  A 50kg block is dropped from a point 10cm above as shown in the fig above. if the force constant of the spring is 4.0 x 10⁴Nm^-1, find the maximum compression of the spring [g = 10ms^-2]

  Options:
  A) 1.25m
  B) 0.50m
  C) 0.25m
  D) 0.05m
  Show Answer
  The correct answer is B .