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1,904 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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1,904 questions

Question 1 of 20 1,904 total questions

Question 581

waec 2002

An object A is held in equilibrium as illustrated in the diagram above. Using the data on the diagram determine the magnitude, W of the weight of

A23N

B17N

C7N

D5N

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Question 582

waec 2002

An object is acted upon by a system of parallel forces causing the object to be in static equilibrium. Which of the following statements is not correct?

AThe resultant of the parallel force is zero

Bthe algebraic sum of the moment of the forces is zero

Call the parallel forces must be equal in magnitude and in direction

Dthe sum of the forces in one direction must be equal to the sum of forces in the opposite direction

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Question 583

waec 2002

An object is released from rest at a height of 25m. Calculate the time it takes to fall to the ground. [g = 10ms^-2]

A25.00s

B10.00s

C2.50s

D2.24s

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Question 584

waec 2002

A car takes off from rest and covers a distance of 80m on a straight road in 10s. Calculate the magnitude of its acceleration

A1.25ms^-2

B1.60ms^-2

C4.00ms^-2

D8.00ms^-2

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Question 585

waec 2002

A man was moving round a circular path continuously for 4 minutes and covered the following distances in the times stated :
Distance (in metres) 200, 400, 600, 300
Time(in minutes) : 1, 2, 3, 4 respectively. Which of the following statements is correct about the motion of the man?

Athe man was moving without uniform velocity

Bthe speed was changing constantly

Cthe velocity was uniform

Dit was an instance of motion in which both speed and velocity are the same

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Question 586

waec 2002

The magnitude of the force required to make an object of mass, m move with speed, v in a circular of radius r is given by the expression

A\(\frac{mr}{v}\)

B\(\frac{mr^2}{v}\)

C\(\frac{mv^2}{r}\)

D\(\frac{mv}{r^2}\)

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Question 587

waec 2002

A boy travels 8 km eastward to a point B and then 6km northward to another point C. Determine the difference between the magnitude of displacement of the boy and distance travelled by him

A2.0km

B4.0km

C10.0km

D13.0km

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Question 588

waec 2002

One common characteristics of solids, liquids and gasses is that?

Aall the three has fixed volume

Btheir molecule have the same size

Ctheir molecules are always in motion

Dall the three have the same inter molecular forces

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Question 589

waec 2002

A solid weight 45N and 15N respectively in air and water. Determine the relative density of the solid

A0.33

B0.50

C1.50

D3.00

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Question 590

waec 2002

A reservoir is filled with a liquid of density 2000kgm^-3. Calculate the depth at which the pressure in the liquid will equal to 9100Nm^-2 [g = 10ms^-2]

A0.262m

B0.455m

C0.664m

D0.819m

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Question 591

waec 2002

The force between the molecules of a liquid in contact with that of a solid is

Aadhesive

Bcohesive

Cmagnetic

Drepulsive

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Question 592

waec 2001

Electrons passing through crystals are diffracted because they

Aare repelled by the atoms in the crystal

Bare attracted by the atoms in the crystals

Cpossess wave properties

Dare particles

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Question 593

waec 2001

A nitrogen nucleus bombarded with an alpha particle produces an oxygen nucleus and a proton. The nuclear reaction for this process is \(^4_2H + ^{14}_2N \to ^{17}_{8}O + ^1_1H + Q\). Which of the following statements about the reaction is not correct?

Athe bombardment results into a nucleus with greater proton number

Bit is an induced nuclear reaction

Cit is a natural radioactive decay

Dthe sum of the final nucleon numbers

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Question 594

waec 2001

Production of x-ray tube begins with

Aphoto electric emission

Bcollision of electrons

Cthermionic emission

Dfield emission of electrons

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Question 595

waec 2001

Calculate the reactance of the inductor in the circuit diagram shown above [\(\pi = \frac{22}{7}\)]

A132\(\Omega\)

B214\(\Omega\)

C264\(\Omega\)

D269\(\Omega\)

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Question 596

waec 2001

In the circuit diagram above. Calculate the energy stored in the inductor at resonance

A0.100J

B0.050J

C0.010J

D0.005J

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Question 597

waec 2001

The material used for constructing the core of an electromagnet is

Airon

Bcarbon

Ccopper

Dsteel

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Question 598

waec 2001

Which of the following statements about magnetic lines of force is not correct?

Aa magnnetic line of force is an imaginary line which the north pole of a magnet would describe if it is free to moves

Bmagnetic lines of force do not cross one another

Cmagnetic lines of force are closely packed together at neutral point

Dthe presence of magnetic lines of force in a region indicates the presence of a magnetic field

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Question 599

waec 2001

The Earth's magnetic equator passes through Jos in Nigeria. At Jos. the

Aangle of variation is zero

Bmagnetic declination is 90^o

Cangle of dip is zero

Dhorizontal component of the Earth's magnetic field is zero

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Question 600

waec 2001

An electric bulb is rated 60W, 220V. Calculate the resistance of its filament when it is operating normally

A296.7\(\Omega\)

B400.0\(\Omega\)

C512.2\(\Omega\)

D806.7\(\Omega\)

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