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.
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Question 281: If a water pump at Kainji Dam is capable of lifting 1000kg of water through a vertical height of 10m in 10s, the power of the pump is [g = 10ms-2]
Options:
A) 1.0kW
B) 10.0kW
C) 12.5kW
D) 15.0kW
E) 20.0kW
Show Answer
The correct answer is B .
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Question 282: The unit of quantity of electricity is called
Options:
A) the ampere
B) the volts
C) the coulomb
D) the ammeter
E) electromotive force
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The correct answer is C .
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Question 283: A body rolls down a slope from a height of 100m. its velocity at the foot of the slope is 20ms-1. What percentage of its initial potential energy is converted into kinetic energy? [g = 10ms-1]
Options:
A) 40%
B) 35%
C) 20%
D) 15%
Show Answer
The correct answer is C .
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Question 284: Hot water is added to three times its mass of water at 10oC and the resultant temperature is 20oC. What is the initial temperature of the hot water?
Options:
A) 100oC
B) 80oC
C) 50oC
D) 40oC
Show Answer
The correct answer is C .
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Question 285: Vapour is said to be saturated on top of an enclosed liquid if _________
Options:
A) The rate of condensation is greater than that of vapourization
B) The rate of condensation is equal to that of vapourization
C) There is neither condensation nor vaporization of the liquid
D) The rate of condensation is less that that of vaporization
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The correct answer is B .
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Question 286: Which of the following can be described as high tension transmission?
Options:
A) high resistance and low voltage
B) low current and high voltage
C) high current and low voltage
D) high voltage and zero current
E) high current and low resistance
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The correct answer is B .
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Question 287:
Which of the following is a type of wave that is both mechanical and longitudinal?
Options:
A) Water waves
B) Seismic waves
C) Sound waves
D) Light waves
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The correct answer is C .
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Question 288: I. MeltingII. Boiling III. RefractionIV. ConductionWhich combination of the above is evident of the molecular nature of matter?
Options:
A) II , III and IV only
B) I ,II and IV only
C) I , III and IV only
D) I , II and III only
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The correct answer is B .
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Question 289:
A hydrometer is an instrument formeasuring the
Options:
A) a depth of water of water in a vessel
B) relative density of a liquid by the method of flotation
C) relative density of a liquid by finding the apparent loss in weight
D) relative humidity of the air
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The correct answer is B .
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Question 290: An object is moving with a velocity of 5m-1. At what height must a similar body be situated to have a potential energy equal in value with kinetic energy of the moving body?
Options:
A) 25.0m
B) 20.0m
C) 1.3m
D) 1.0m
Show Answer
The correct answer is C .