Physics Past Questions

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48 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

48 questions
Question 1 of 8 48 total questions
Question 21
jamb 1987
If a beaker is filled with water it is observed that the surface of the water is not horizontal at the glass-water interface. This behavior is due to
Afriction
Bviscosity
Csurface tension
Devaporation
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Question 22
jamb 1987

The coefficient of static friction between a 40kg crate and concrete surface is 0.25. Find the magnitude of the minimum force needed to keep the crate stationary on the concrete base inclined at 45o to the horizontal. [G = 10ms-1]

A400N
B300N
C283N
D212N
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Question 23
jamb 1987
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]
A40%
B35%
C20%
D15%
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Question 24
jamb 1987
A constant force of 40N acting on a body initially at rest gives an acceleration of 0.1ms-2 for 4s. Calculate the work done by the force
A8J
B10J
C32J
D160J
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Question 25
jamb 1987
An elevator of mass 4800kg is supported by a cable which can safely withstand a maximum tension of 60 000N. The maximum upward acceleration the elevator can have is
A2.5ms-2
B5.0ms-2
C7.5ms-2
D10.0ms-2
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Question 26
jamb 1987
A man walks 8km north and then 5km in a direction 60o east of north. Find the distance from his starting point
A11.36km
B12.36km
C13.00km
D14.36km
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Question 27
jamb 1987
A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms-1. What is the mass of the material ejected per second?
A81.00kg
B9.00kg
C0.90kg
D0.09kg
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Question 28
jamb 1987
Which of the following units is equivalent to kgms-1?
ANs-1
BNms-1
CNs
DJs-1
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