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Physics Past Questions

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2,483 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

2,483 questions
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Question 1 of 20 2,483 total questions
Question 331
jamb 2017

Calculate the specific latent heat of vaporization of steam of 1.13 x 10\(^6\)J of heat energy is required to convert 15kg of steam to water.

A7.53 x 105 Jkg\(^{-1}\)
B7.53 x 10-2Jkg\(^{-1}\)
C\(7.53 \times 10^{4}\)Jkg\(^{-1}\)
D7.53 x 10-3Jkg\(^{-1}\)
View Explanation & Discuss
Question 332
jamb 2017
Under which of the following conditions is workdone
AA man supports a heavy food above his head with his hands
BA boy climbs onto a table
CA man pushes unto a table
DA woman holds a pot of water
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Question 333
jamb 2017
Under what conditions are cathode rays produced in a discharge tube?
AHigh pressure and low voltage
BHigh pressure and high voltage
CLow pressure and low voltage
DLow pressure and high volatge
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Question 334
jamb 2017

Calculate the upthrust on an object of volume 50cm3 which is immersed in liquid of density \(10^{3}\) kgm-3 [g = 10ms-2]

A0.8N
B2.5N
C0.5N
D1.0N
View Explanation & Discuss
Question 335
jamb 2017

Why do soldiers march disorderly while crossing a bridge?

ATo prevent resonance on the bridge
BTo set the bridge into resonance
CTo make the b ridge collapse
DTo spread their weight evenly on the bridge
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Question 336
jamb 2017
Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm.
A18.57NC\(^{-1}\)
B53.06N C\(^{-1}\)
C2.28NC\(^{-1}\)
D0.80NC\(^{-1}\)
View Explanation & Discuss
Question 337
jamb 2017
Which of the following is not an electromagnetic radiation?
Ax - ray
BRadio waves
Csunlight
Dsound waves
View Explanation & Discuss
Question 338
jamb 2017

Which is the incorrect formula for a body accelerating uniformly?

Aa = v2 − \(\frac{u^2}{2}\)
Bv2 = u2 + 2as
Cs = ut + \(\frac{1}{2}\) at2
Dv2 − u2= 2as
View Explanation & Discuss
Question 339
jamb 2016
The frequency of beats produced when two tunning forks of frequencies 258Hz and 270Hz are sounded close to each other
A6Hz
B264Hz
C528Hz
D12Hz
View Explanation & Discuss
Question 340
jamb 2016
Which of the following statements is Not true about atoms?
AAtom of different elements have different atomic weights
BThe mass of an atom is concentrated in the nucleus
CAn atom is made up of a nucleus and number of electrons
DAtoms of all elements are identical
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Question 341
jamb 2016

In the diagram above, the direction of the force between N and S in the magnetic field is

AMP
BSN
CNS
DPM
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Question 342
jamb 2016

From the diagram above, the measuring accuracy of the micrometer screw gauge is

A4.78mm
B4.16mm
C4.66mm
D4.70mm
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Question 343
jamb 2016
In the diagram above, the neutral point is at
AR
BX
CS
DP
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Question 344
jamb 2016

In the diagram above, which of the following velocity-time graphs shows uniform acceleration of a body from rest?

AC
BD
CB
DA
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Question 345
jamb 2016
If the magnification of a virtual image formed by an object 10cm from a convex less is 3, then the focal length of the lens is
A10cm
B20cm
C25cm
D15cm
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Question 346
jamb 2016
Boiling occurs when the vapour pressure of a liquid is
AAt the evaporation point
BLess than the atmospheric pressure
CGreater than the atmospheric pressure
DEqual to the atmospheric pressure
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Question 347
jamb 2016

The impulse of a force is deduced from Newton's second law as

AF = ma
BF = m( \(\frac{v - u}{t}\))
CF = mg
DF = mv - mu
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Question 348
jamb 2016
A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?
A8.7N
B37.0N
C87.0N
D13.0N
View Explanation & Discuss
Question 349
jamb 2016

A manometer is an instrument used for measuring

ARelative density of liquid
BPressure in liquids and gases
CHumidity
DAtmospheric pressure
View Explanation & Discuss
Question 350
jamb 2016

A satellite revolving around the earth is kept on its orbit by?

ACentripetal forces only
BCentripetal and frictional forces
CCentrifugal forces only
DCentripetal and centrifugal forces
View Explanation & Discuss
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