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98 questions

Question 1 of 20 98 total questions

Question 21

waec 1988

The clinical thermometer is characterized by having a

Awide range of temperature

Bwide bore

Clong stem

Dconstriction

Enarrow bore

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Question 22

waec 1988

Which of the following cannot be used to measure the temperature of a substance?

Avariation of pressure with temperature

Bexpansivity of a liquid

Cchange in resistance of a conductor

Dthermometric effect

Echange in color with temperature

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Question 23

waec 1988

Which of the following statements about the gaseous state of matter is not correct? The molecules of a substance is in gaseous state

Aare in constant state of motion

Bhave different speed

Chave a temperature which is an average measure of the kinetic energy

Dhave no intermolecular attractive force

Ehave a pressure which is determined by the number of molecules present

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Question 24

waec 1988

The motion of a body is simple harmonic if the

AAcceleration is always directed towards a fixed point

Bpath of motion is a striaght line

CAcceleration is directed towards a fixed point and proportional to its distance from the point

DAcceleration is proportional to the square of the distance from a fixed point

EAcceleration is constant and directed towards a fixed point

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Question 25

waec 1988

Which of the following correctly gives the relationship between linear speed V and angular speed ω of a body moving uniformly in a circle of radius r?

AV = ωr

BV = ω²r

CV = ωr²

DV² = ωr

EV = ω/r

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Question 26

waec 1988

A ball is thrown vertically upwards from the ground with an initial velocity of 50ms^-1. What is the total time spent by the ball in the air? (g = 10ms^-2)

A2.5s

B5.0s

C10.0s

D15.0s

E20.0s

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Question 27

waec 1988

A catapult is used to project a stone. Which of the following energy conversions takes place as the stone is released?

AThe kinetic energy of the stone is converted into gravitational potential energy

BThe gravitational potential energy of the catapult is converted into kinetic energy of the stone

CThe gravitational potential energy is converted into elastic potential energy

DThe elastic potential energy of the catapult is converted into gravitational potential energy of the stone

ENone of the above

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Question 28

waec 1988

A body is projected into space with an initial velocity V0 at an angle, θ to the horizontal. Which of the following statements is/are correct about its motion?
I. The total time of flight is (V0 Cosθ)/g.
II. The maximum height is (V0 Sin 2θ)/2g.
III. The range is (V02 Cos2θ)/g.

AI & II only

BI & III only

CII & III only

DII only

EIII only

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Question 29

waec 1988

A ball of mass 0.5kg moving at 10ms^-1 collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.

A0.2ms^-1

B0.5ms^-1

C5.0ms^-1

D10.0ms^-1

E20.0ms^-1

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Question 30

waec 1988

When three coplanar and non-parallel forces are in equilibrium,
I. they can be represented in magnitude and direction by the three sides of a triangle taken in order.
II. their lines of action meet at a point.
III. the magnitude of anyone equals the magnitude of the resultant of the other two.
IV. any one force is the equilibrant of the other two.

Which of the following statements above are correct?

AI & II only

BII & III only

CII, III & IV only

DI, II, III & IV

EI, III & IV only

View Explanation & Discuss

Question 31

waec 1988

A man will exact the greatest pressure on a bench when he

Alies flat on his back

Blies flat on his belly

Cstand on both feet

Dstand on one foot only

Estand on toes of one foot

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Question 32

waec 1988

The slope of a striaght line displacement time graph indicates the

ADistance travelled

BUniform velocity

CUniform acceleration

DInstantaneous acceleration

EUniform speed

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Question 33

waec 1988

Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pressure IV. Mass

AI, II, III & IV

BI, II, III only

CI, II, IV only

DI, & III only

EI & IV only

View Explanation & Discuss

Question 34

jamb 1988

A particle is injected perpendicularly into an electric field, it travels along a curved path as depicted in the image above,the particle is

Agamma ray

Belectron

Cneutron

Dproton

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Question 35

jamb 1988

In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 2ohms, the value of the unknown resistance X is

View Explanation & Discuss

Question 36

jamb 1988

The wire X in the figure above is at right angles to the plane of the paper and carries a current into the paper. at which of the points labelled 1-4, will the magnetic flux density due to this current be in the same direction as that of the horizontal component of earth's magnetic field

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Question 37

jamb 1988

E,F and G are yellow, red and cyan transparent light filters respectively. The color of a white opaque object when viewed through the arrangement of the filters above is

Ayellow

Bred

Cblack

Dblue

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Question 38

jamb 1988

In the figure above, what is the angle of reflection of the ray of light at mirror M\(_2\)?

A\( 90^{\circ} \)

B\( 60^{\circ} \)

C\( 45^{\circ} \)

D\( 30^{\circ} \)

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Question 39

jamb 1988

The fig above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y

A12Hz

B19Hz

C60Hz

D75Hz

View Explanation & Discuss

Question 40

jamb 1988

When one arm of a U-tube manometer is connected to a gas supply, the levels of mercury in the two arms of the U-tube is shown in the figure above, if the atmospheric pressure is 76.0cm hg, the gas pressure is

A62.6cm hg

B72.5cm hg

C79.5cm hg

D85.9cm hg

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