Physics Past Questions

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Past Questions

1,904 questions
Question 1 of 20 1,904 total questions
Question 101
waec 2021

Which of the following scientist suggested that moving particles exhibit wave properties?

 

AIsaac Newton
BErnest Rutherford
CLouis de Broglie
DJ.J. Thompson
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Question 102
waec 2021

Which of the following factors is not among that determines the resistance of a wire?

Amass   
Bcross-sectional area 
Clength   
Dmaterial
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Question 103
waec 2021

If the relative humidity of the atmosphere increases, the rate of evaporation of sweat from the human body?

 

Adecreases   
Bremains the same     
Cincreases then decreases   
Dincreases
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Question 104
waec 2021

Which of the following set of quantities have members which are all vectors?

 

A    Pressure, energy and force                 
BForce, displacement and momentum   
C Distance, acceleration and work     
DDensity, volume and weight
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Question 105
waec 2021

According to Pascal's principle, the pressure in a fluid is always?     

Adependent on density of the fluid.   
B   distributed partially in all directions.      
Ctransmitted equally in all directions.     
D increasing with height.
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Question 106
waec 2021

A note produced by an instrument is distinguished from a similar note produced by another instrument by the?     

A intensity,       
Bpitch.     
Covertones.   
Dloudness
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Question 107
waec 2021

Which of the following statements about distance and displacement is not correct?     

A Displacement is a vector quantity.   
B Distance has dimension    
C Displacement is measured in meters.
D Distance is a vector quantity.
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Question 108
waec 2021

The electrons in a cathode-ray tube are produced by?          

Aheating a metal filament.               
B ionization of the air.             
C applying an electric field to the x-plates.
D
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Question 109
waec 2021

Which of the following statements is not a characteristic of a plane progressive wave?     

AEnergy travels out through the medium
BNeighboring points along the profile possess different amplitudes
CNeighboring points along the profile possess the same amplitude
DNeighboring particles vibrate with different phase
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Question 110
waec 2021

A stone is thrown horizontally with initial velocity 15m/s from a tower 20 m high. How long does it take to reach the ground? [g= 10m/s\(^2\)

 

A2s
B4s
C5s
D1s
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Question 111
waec 2021

An ice cube has mass of 20 g at 5°C. Calculate the energy required to raise its temperature to 0°C. [Specific heat capacity of ice = 2.1 J/g°c]

     

A105 J           
B 100 J      
C42 J      
D210 J
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Question 112
waec 2021

The following statements about a loudspeaker are correct except?        

Aits contains a permanent magnet.     
B sound signal converted  to varying current signal enters the speech coil.       
C  the current in the speech coil creates a magnetic force on the coil.        
Dthe magnetic force on the speech coil is uni-directional.
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Question 113
waec 2021

A radioactive material has a half-life of 1.0 hour If 200.0 g of it was present at 6 a.m. on a certain day, how many grams will have decayed by 9 a.m. on the same day?

     

A175.0 g            
B150.0 g     
C  100.0 g          
D187.5 g
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Question 114
waec 2021

An electric circuit consists of a resistor. a battery and a key. If the voltage of the battery is increased, there Would be an increase in the?  

Acurrent and resistance only.   
Bcurrent resistance and temperature.      
Ccurrent and temperature only.    
D resistance and temperature only
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Question 115
waec 2021

A force of 10 N, acting continuously, increases the kinetic energy of an object from 20.J to 60 J. Find the distance moved by the object.   

A200m     
B40m    
C4m 
D 400m
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Question 116
waec 2021

A rotating disc contains a set of holes in a circle. An air jet is directed onto the holes and a note of frequency 480 Hz is produced. If the number of holes is 20, calculate the speed of rotation of the disc.     

A 10 rev/s       
B 20 rev/s   
C 24 rev/s     
D8 rev/s.
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Question 117
waec 2021

A man weighing 200 N runs up a staircase in 5s. If the height of the staircase is 9 m, calculate the power of the man.   

A1000 W
B360 W
C40 W
D1800 W
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Question 118
waec 2021

Which of the following statements best describes the particles in a solid at room temperature? They are    

A far apart and moving randomly.     
Bclose together and vibrating.   
C close together and stationary.      
Dclose together and moving randomly.
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Question 119
waec 2021

A wire of cross-sectional area 2π  x  10\(^-{8}\) m\(^2\) and resistivity 1.1 x 10\(^-{8}\) Ω m, has a resistance of 21Ω.

Calculate the length of the wire. [π=22/7]     

A180 m
B140 m
C120 m
D240 m
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Question 120
waec 2021

In the diagram above, a bulb is lit by drawing 2.0A from 440V a.c. source. Calculate the cost of keeping the bulb on for two days at $0.40 per kilowatt-hour.                 

 

A$16.90
B$84.48
C$1690.00
D$8.48
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