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49 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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49 questions

Question 1 of 9 49 total questions

Question 21

jamb 1978

The internationally agreed system of units(SI) for physical measurements are

AIb, ft, sec

Bg, m, sec

Ckg, m, sec

Dcm, g, sec

Ekg, cm, sec

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Question 22

jamb 1978

mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boiling point. which of the above statements are true?

Ai and ii only

Bi, ii and iii only

Ciii and iv only

Div and v only

Eiii, iv and v only

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Question 23

jamb 1978

A machine gun with a mass of 5kg fires a 50g bullet at speed of 100ms^-1. The recoil speed of the machine gun is

A0.5 msec^-1

B1.5 msec^-1

C1 msec^-1

D2 msec^-1

E4 msec^-1

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Question 24

jamb 1978

An ice cube floats in a glass of water filled to the brim. What happens when the ice melts?

AThe water level remains the same

Bthere is a drop in the level of water in the glass due to condensation on its outside

Cthe water in the glass overflows

Dthe level of water drops because melted ice occupies less volume

Enone of the above is correct

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Question 25

jamb 1978

A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?

A60

C6 x 10^-2

D6 x 10^-3

E0.6

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Question 26

jamb 1978

A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms^-2)

A9s

B4.5s

C6s

D7.5s

E3s

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Question 27

jamb 1978

An air force jet flying with a speed of 335ms-1 went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired?

A838m

B3350m

C670m

D1675m

E67m

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Question 28

jamb 1978

The frictional force between two bodies?

Aexists only when there is relative motion or tendency for motion

Bacts so as to oppose the motion

Cdepends on the normal reaction between the two surfaces

Dis relatively independent of the area in contact

Ehas all of these characteristics

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Question 29

jamb 1978

A man walks 1km due east and then 1km due north. His displacement is

A1 km N15^oE

B1 km N30^oE

C\(\sqrt 2\)km N 45^oE

D\(\sqrt 2\)km N 60^oE

E2km N 75^oE

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