Physics Past Questions

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4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

4,719 questions
Question 1 of 20 4,719 total questions
Question 301
waec 2021

The acceleration of a moving object can be determined from the?  

Aslope of its distance-time graph. 
Barea under its distance-time graph.    
Cslope of its velocity-time graph.   
Darea under its velocity-time graph
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Question 302
waec 2021

A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the following  changes would have resulted from the heating?

 

   

ANo changes occur in its volume and density     
BIts volume increases and its density increases   
CIts volume increases and its density decrease          
D Its volume increases without a change in density
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Question 303
waec 2021

Which of the following actions will increase capacitance of a parallel plate capacitor?

I. Decreasing the distance between the plates

II. Increasing the distance between the plates.

III. Increasing the area of the plates overlap.

IV. Avoiding the use of dielectric between the plate

      

A I and III only     
B II and III only   
C   I and IV      
D . III and IV only
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Question 304
waec 2021

Which of the sketched graphs above illustrates the correct variation of the gravitational force, Fg between two objects and the distance, d, between the centre

AA
BB
CC
DD
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Question 305
waec 2021

The distance between a node and its adjacent antinode of a transverse wave is equal to?    

Ahalf of the wavelength.
Bthe wavelength.
Cthrice the wavelength.
Dquarter of the wavelength.
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Question 306
waec 2021

Which of the following statements about the molecules of solids and liquids is correct? They both   

A  have weak attraction.     
B  have wide separations.     
C exhibit random motion.     
D exhibit vibratory motion.
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Question 307
waec 2021

Electric motor primarily converts?    

Aelectrical energy to chemical energy.
Bkinetic energy to potential energy
Celectrical energy to mechanical energy
Delectrical energy to heat energy.
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Question 308
waec 2021

A heat sensitive resistor made of a semiconductor is called? 

Athermometer.
Bthermostat.
Cthermistor
Dthermopile.
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Question 309
waec 2021

Opening in the eye through which light passes to the retina is called the?   

Apupil   
Bcornea. 
C iris 
Doptic nerve. 
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Question 310
waec 2021

Which of the following factors does not affect the rate of evaporation of a liquid? 

Atemperature
Bvolume
Cwind
Dsurface area
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Question 311
waec 2021

Formation of hydrogen bubbles at the copper plate of a primary cell is called?    

Apolarization. 
B back e.m.f.   
C electrolysis. 
D local action.
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Question 312
waec 2021

The reason for laminating the soft iron core of a  transformer is to?   

Areduce eddy current.   
B reduce magnetic flux.   
Cincrease the magnetic flux. 
D  reduce its efficiency. 
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Question 313
waec 2021

Which of the following quantities is not an example of force? 

AMass     
BTension   
CWeight 
D  Friction
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Question 314
jamb 2021

A 2H inductor has negligible resistance and is connected to a \(\frac{50}{\pi}\) Hz A.C supply. The reactance of the inductor is?

A200\(\Omega\)
B50\(\Omega\)
C\(\frac{100}{\pi}\)
D\(\frac{25}{\pi \Omega}\)
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Question 315
jamb 2021

An astronomical telescope is said to be in normal adjustment when the?

Aeye is accommodated
Bfocal length of an object lens is longer than that of eye piece
Cfinal image is at the near point of eye
Dfinal image is at infinity
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Question 316
jamb 2021

The velocities of light in air and glass are 3.0 x 10\(^8\)ms\(^{-1}\) and 2.0 x 10\(^8\)ms\(^{-1}\) respectively. If the angle of refraction is 30º, the sine of the angle of incidence is? 

A0.33
B0.50
C0.67
D0.75
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Question 317
jamb 2021

The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?

Aconcave mirror of focal length 5cm
Bconcave mirror of focal length 10cm
Cconvex mirror of focal length 5cm
Dconvex mirror of focal length 10cm
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Question 318
jamb 2021

A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?

A3m
B5m
C6m
D10m
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Question 319
jamb 2021

The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

A4
B3
C2
D1
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Question 320
jamb 2021

If a sound wave goes from a cold air region to a hot air region, its wavelength will?

Aincrease
Bdecrease
Cdecrease then increase
Dremain constant
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