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77 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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77 questions

Question 1 of 20 77 total questions

Question 11

waec 1989

Which of the following surfaces will radiate heat energy best?

ARed

BWhite

CBlack

DYellow

EBlue

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Question 12

waec 1989

A thermometer has its stem marked in millimeter instead of degree Celsius. The lower fixed point is 30mm and the upper is 180mm. Calculate the temperature in degree celsius when the thermometer reads 45mm.

A67.5^oC

B30.0^oC

C25.0^oC

D15.0^oC

E10.0^oC

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Question 13

waec 1989

An engine raises 1000kg of water through a height of 60m in 20s. What is the power of the engine? (Take g = 10ms^-2>).

A120,000 W

B30,000 W

C333 W

D300 W

E30 W

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Question 14

waec 1989

Which of the following is a derived unit?

AMetre

BCoulomb

CKilogram

DSecond

EAmpere

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Question 15

waec 1989

The motion of the prongs of the sounding tuning fork is

Arandom

Btranslational

Crotational

Dvibratory

Evibratory and rotational

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Question 16

waec 1989

A stone tied to a string is made to revolve in a horizontal circle of radius 4m with an angular speed of 2 rad per sec. With what tangential velocity will the stone move off the circle if the string is cut?

A16.0 ms^-1

B8.0 ms^-1

C6.0 ms^-1

D2.0 ms^-1

E0.5 ms^-1

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Question 17

waec 1989

A piece of cork floating on water is acted upon by the forces of...

AWeight and viscosity

Bweight and upthrust

Cupthrust and viscosity

Dweight only

Eupthrust only

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Question 18

waec 1989

A block of material of volume 20cm^-3 and density 2.5gcm^-3 is suspended from a spring balance with half the volume immersed in water. What is the reading of the spring balance? (Density of water = 1.0gcm^-3).

A8g

B25g

C30g

D40g

E50g

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Question 19

waec 1989

Which of the following is used to determine the relative density of the acid in a car battery?

AHypsometer

BHygrometer

CManometer

DHydrometer

ESpectrometer

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Question 20

waec 1989

A boy pulls a nail from the wall with a string tied to the nail. The string is inclined at an angle of 60^o to the wall. If the tension in the string is 4N, what is the effective force used in pulling the nail?

A2√3 N

B4 N

C4√3 N

D8 N

E2 N

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Question 21

waec 1989

Which of the following is not a consequence of a force field?

Awieght

Bsurface tension

Cgravitational pull

Dmagnetic force

Eelectric force

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Question 22

waec 1989

Which of the following is NOT a vector quantity?

Amomentum

Bforce

Cvelocity

Dtemperature

Edisplacement

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Question 23

jamb 1989

A beam of radiation is passed between a pair of charged plates as indicated in the fig above. Beam P is undetected While Q is deflected to the left. P and Q respectively should be

I.γ-rays β-rays
II. x-rays β-rays
III. γ-rays x-rays
IV. x-rays x-rays

AI only

BIII only

CI and II

DIII and IV

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Question 24

jamb 1989

The fig above shows a conductor PQ carrying a current I in the direction shown. At a particular position near the conductor is a compass needle K. Neglecting the earth's magnetic field, the compass needle will

Asettle in any direction

Bsettle in a fixed direction only if the conductor PQ is a magnetic material

Csettle in a fixed direction WHETHER the conductor PQ is a magnetic material OR NOT

Dbe stationary

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Question 25

jamb 1989

The total power drawn from the cell in the circuit above is

A12W

B24W

C32W

D40W

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Question 26

jamb 1989

Three 2-µF capacitors are arranged as seen in the circuit above . The effective capacitance between E and F is

A0.75µF

B1.33µF

C3.00µF

D6.00µF

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Question 27

jamb 1989

In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is correct for finding the correct value of the resistance R

BII

CIII

DIV

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Question 28

jamb 1989

The air column as shown above is set into vibration by the turning fork. In this State of resonance, the waves in the air column will be

Astationary and transverse

Bstationary and longitudinal

Cprogressive and transverse

Dprogressive and longitudinal

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Question 29

jamb 1989

In the fig above W\(_1\) = 200g, and W\(_2\) =450g. Calculate the extension of the spring per unit load.
[g = 10ms\(^{-2}\)]

A6.0 x 10^-5mN^-1

B2.5 x 10^-4mN^-1

C6.0 x 10 ^-3mN^-1

D2.5 x 10 ^-2mN^-1

View Explanation & Discuss

Question 30

jamb 1989

A block of mass m is held in equilibrium against a vertical wall by a horizontal force. If the coefficient of friction between the wall and the block is µ, the minimum value of the horizontal force is

Aµmg

B(1-µ)mg

C(1+µ)mg

Dmg/µ

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