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147 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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147 questions

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Question 41

waec 2005

The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate the temperature in degrees Celsius when the thermometer reads 45mm

A10.0^oC

B15.0^oC

C20.0^oC

D30.0^oC

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Question 42

waec 2005

Which of the following source of energy is renewable?

Asun

Bpetroleum

Ccoal

Duranium

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Question 43

waec 2005

Which of the following quantities has the same unit as energy?

Apower

Bwork

Cforce

Dmomentum

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Question 44

waec 2005

Fuel was consumed at a steady rate of 5.0 x 10^-2kg per second in a rocket engine and ejected as a gas with a speed of 4 x 10³ms^-1. Determine the thrust on the rocket

A20N

B80N

C200N

D800N

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Question 45

waec 2005

A body of mass 5kg moving with a velocity of 10ms^-1 collides with a stationary body of mass 6kg. If the two bodies stick together and move in the same direction after their collision, calculate their common velocity

A4.55ms^-1

B12.00ms^-1

C30.00ms^-1

D50.00ms^-1

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Question 46

waec 2005

Which of the following about an object performing simple harmonic motion is correct? Its acceleration

Ais maximum at the extreme ends

Bis constant and directed towards a fixed point

Cis zero when it is displayed from the equilibrum position

Dvaries linearly with the displacement from a fixed point and is directed towards the fixed point

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Question 47

waec 2005

The frequency of a swinging pendulum is the

Anumber of complete oscillations the pendulum makes in a second

Bnumber of amplitudes the bob makes in a second

Cangle the bob swings through in a second

Ddistance the bob covers in a second

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Question 48

waec 2005

A body starts from rest and accelerates uniformly at 5ms^-2 until it attains a velocity of 25ms-1. Calculate the time taken to attain this velocity

A2.5s

B5.0s

C10.0s

D125.0s

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Question 49

waec 2005

Which of the following type of motion does a body undergo when acted upon by a couple?V

Avibrational

Btranslational

Crotational

Drandom

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Question 50

waec 2005

Masses,m¹ and m² at the 20-cm and 65-cm marks respectively of a uniform metre rule freely suspended at its centre of gravity. If the metre rule balances horizontally, determine the ratio m² : m¹

A2 : 1

B3 : 3

C2 : 3

D1 : 2

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Question 51

waec 2005

A wheel and axle of radii 800mm and 200mm respectively is used to raise a body of weight 800N by the application of 250N. Calculate the efficiency of the machine

A85%

B80%

C60%

D20%

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Question 52

waec 2005

Which of the following simple machines is a second class lever?

Awheel barrow

Bcrowbar

Cclaw hammer

Dseesae

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Question 53

waec 2005

A body of mass 25kg, moving at 3ms-1 on a rough horizontal floor, is at rest after sliding through a distance of 2.50m on the floor. Calculate the coefficient of sliding friction. [g = 10.0ms\(^{-2}\)]

A0.09

B0.18

C0.36

D0.54

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Question 54

waec 2005

The friction which exists between two layers of liquid in relative motion is called

Acapillarity

Bsurface tension

Cviscosity

Dcohension

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Question 55

waec 2005

Which of the following statements about a spring balance and/or a chemical balance is not correct?

Athe chemical balance operates on the principle of moments

Bthe sprin balance operates on Hooke's law

Ceither may be used to measure the weight of a substance

Dthe reading of a spring balance changes over the surface of the earth, while that of the chemical balance remaind constant

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Question 56

waec 2005

Each of the following physical quantities is classified as a vector or a scalar quantity. Which of the classifications is correct?

Aelectric potential (Vector)

Bmomentum (scalar)

Cgravitational field intensity (scalar)

Dmagnetic flux density (vector)

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Question 57

waec 2005

Which of the following phenomena is the practical evidence for the existence of the continual motion of molecules?

ATranslational motion

Brotational motion

Cbrownian motion

Doscillatory motion

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Question 58

jamb 2005

A motorcyclist traveling at 30ms\(^{-1}\) starts to apply his brakes when he is 50m from the traffic light that had just turned red. If he reached the traffic light, his decceleration is

A18 ms\(^{-2}\)

B10 ms\(^{-2}\)

C9 ms\(^{-2}\)

D5 ms\(^{-2}\)

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Question 59

jamb 2005

The amount of energy released when 0.5kg of uranium is burnt completely is [c = 3 x 10\(^8\)m/s]

A1.5 x 10\(^8\)J

B4.5 x 10\(^8\)J

C1.5 x 10\(^{16}\)J

D4.5 x 10\(^{16}\)J

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Question 60

jamb 2005

In the photoelectric effect, which of the following graphs correctly represents the graph of stopping potential Vo against frequency,f, of incident light?

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