Physics Past Questions

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

95 questions
Question 1 of 15 95 total questions
Question 41
jamb 1997

An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is

A7.2kg
B33.2kg
C43.2kg
D53.2kg
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Question 42
jamb 1997
A liquid of mass 1.0 x 103kg fills a rectangular tank of length 2.5m and width 2.0m. If the tank is 4m high, what is the pressure at the middle of the tank?[g = 10ms-2]
A1.0 x 104Nm-2
B2.0 x 103Nm-2
C1.5 x 103Nm-2
D1.0 x 103Nm-2
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Question 43
jamb 1997
A piece of wire gauze can be made to lie on water because
Athe wire guaze is less dense than water
Bthe water molecules repels the wire guaze upwards
Cthe water surface has the effect of an elastic thin skin
Dof the cohensive forces between the water and the wire guaze molecules
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Question 44
jamb 1997
A cube of sides 0.1m hangs freely from a string. What is the upthrust on the cube when totally immersed in water? [density of water is 1000kgm-2, g = 10ms-2]
A1000 N
B700 N
C110 N
D10 N
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Question 45
jamb 1997
A load of 20N on a wire of cross-sectional area 8 x 10-7m2, produces an extension of 10m2. calculate Young's modulus for the material of the wire if its length is 3m
A7.0 x 1011Nm-2
B7.5 x 1011Nm-2
C8.5 x 1011Nm-2
D9.0 x 1011Nm-2
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Question 46
jamb 1997

An electric water pump rate 1.5 kW, lifts 200kg of water through a vertical height of 6 meters in 10 seconds. What is the efficiency of the pump? [g = 10ms-2, neglecting air resistance]

A90.0%
B85.0%
C80.0%
D65.0%
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Question 47
jamb 1997

An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms\(^{-1}\) at a height of 10m. Calculate its initial kinetic energy at the ground level.[g = 10ms\(^{-2}\), neglect air resistance]

A10 J
B20 J
C30 J
D50 J
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Question 48
jamb 1997
A planet has mass m1 and is at a distance r, from the sun. A second planet has mass m2 = 10m1 and at a distance of r2 = 2r1 from the sun. Determine the ratio of the gravitational force experienced by the planets.
A1 : 5
B2 : 5
C3 : 5
D4 : 5
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Question 49
jamb 1997
A body of mass 2kg moving vertically upwards has its velocity increased uniformly from 10ms-1 to 40ms-1 in 4s. Neglecting air resistance, calculate the upward vertical force acting on the body.[g = 10 ms-1]
A15N
B20N
C35N
D45N
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Question 50
jamb 1997

Which of the following with respect to a body performing simple harmonic motion are in phase?

Adisplacement and velocity of the body
Bdisplacement and force on the body
Cvelocity and acceleration of the body
Dforce acting on the body and the acceleration
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Question 51
jamb 1997
Two bodies X and Y are projected on the same horizontal plane, with the same initial speed but at angles 30 and 60 respectively to the horizontal. Neglecting air resistance, the ratio of the range of X to that of Y is
A1:1
B1:2
C√3:1
D√3
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Question 52
jamb 1997
An arrow of mass 0.1kg moving with a horizontal velocity of 15ms-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is
A15.0 ms-1
B7.5 ms-1
C3.8 ms-1
D3.0 ms-1
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Question 53
jamb 1997
A 5kg block is released from rest on a smooth plane inclined at an angle of 30o to the horizontal. What is the acceleration down the plane? [g = 10ms-2]
A5.0 ms-2
B5.8 ms-2
C8.7 ms-2
D25.0 ms-2
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Question 54
jamb 1997

The distance x m travelled by a particle in time t seconds is described by the equation x = 10 + 12t\(^2\), Find the average speed of the particle between the time interval t = 2s and t = 5s

A60 ms-1
B72 ms-1
C84 ms-1
D108 ms-1
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Question 55
jamb 1997

At what respective values of X, Y and Z would the unit of force, the newton, be dimensionally equivalent to MxLyTz?

A-1, 1, 2
B1, 1, -2
C1, -1, 2
D-1, 1, -2
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