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4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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4,719 questions

Question 1 of 20 4,719 total questions

Question 871

waec 2010

A vertical string, suspended from a fixed point and having a small mass attached to the free end is set into oscillations. Which of the following statements about the system are correct? i. The potential energy of the mass is a minimum at the middle of the swing ii. Its kinetic energy is a maximum at the middle of the swing iii. The sum of the potential and kinetic energies is constant throughout the swing

Ai,ii and iii

Bi and ii only

Cii and iii only

Di and iii only

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Question 872

waec 2010

simple harmonic oscillator has a period of 0.02s and amplitude of 0.25m. Calculate the speed in ms^-1 at the centre of the oscillation

A125\(\pi\)

B25.00\(\pi\)

C100.00 \(\pi\)

D400.00\(\pi\)

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Question 873

waec 2010

Which of the following statements best describes a rigid body? A body which

Ais not equally deformed

Bwhen deformed regains it shape

Cis brittle

Dwhen deformed remains deformed

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Question 874

waec 2010

a body is projected horizonatlly from the top of a cliff 45m above the ground. if the body lands at a distance 30m from the foot of the cliff, calculate the speed of projection. [g = 10ms-2]

A10ms^-1

B15ms^-1

C20ms^-1

D30ms^-1

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Question 875

waec 2010

The average speed of an object is determined by dividing the sum of its initial and final speeds by two only when the acceleration is

Achanging

Buniform

Cincreasing

Ddecreasing

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Question 876

waec 2010

Two cars X and Y travelling in opposite directions along the same high way at uniform velocities 110 kmh^-1 and 90kmh^-1 respectively pass each other at a certain point. The velocity of X relative to Y at the time they pass each other is

A200 kmh^-1

B100 kmh^-1

C40 kmh^-1

D20 kmh^-1

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Question 877

waec 2010

Which of the following statements about moving particle is correct?

Aif the resultant force acting on the particle is zero, then it is in dynamic equillibrium

BIf the resultant force acting on the acting on the particle is greater than zero, then it is moving with a uniform velocity

Cthe rate of change of its momentum with time tales place in a direction opposite to that of its motion

Dthe particle falling freely covers equal distances in equal time interval

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Question 878

waec 2010

Which of the following statements about static friction is correct? It

Ais independent of the nature of the surface in contact

Bdepends on the area of surface in contact

Cdepends on the relative motion between the surface in contact

Ddepends on the weight of the moving body

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Question 879

waec 2010

The types of motion which a cylindrical drum rolling down an inclined plane undergoes are

Acircular and translational

Brotational and translational

Crotational and circular

Drectilinear and circular

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Question 880

waec 2010

What is the density of a fuel of relative density 0.72? [Density of water = 1000kg m^-3]

A72 kgm^-3

B720 kgm^-3

C7200 kgm^-3

D72000 kgm^-3

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Question 881

waec 2010

Which of the following instruments is best for measuring the diameter of a thin constantan wire?

Acallipers

Bmetre rule

Cmicometer screw guage

Dvernier callipers

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Question 882

waec 2010

Which of the following properties of a long steel bar would alter if the bar were melted, recast into a cube and allowed to cool to its original temperature?

Asensity

Bvolume

Cspecific heat capacity

Delectrical resistance

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Question 883

jamb 2010

The radioisotope \( ^{235}_{92}U \) decays by emitting two alpha particles, three beta particles and a gamma ray. What is the mass and atomic number of the resulting element?

A215 and 88

B91 and 227

C227 and 91

D92 and 238

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Question 884

jamb 2010

An object is weighed at different locations on the Earth. What will be the right observation?

ABoth the mass and weight vary

BThe weight is constant while the mass varies

CThe mass is constant while the weight varies

DBoth the mass and weight are constant

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Question 885

jamb 2010

The process whereby a substance changes from a solid to liquid when heat is applied, is called?

AEvaporation

BVaporization

CFission

DFusion

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Question 886

jamb 2010

In Faradays law of electrolysis, a graph of the mass deposited against the quantity of electricity is plotted. The slope of the graph gives?

Athe energy released

Bthe electrochemical equivalent

Cthe current flowing

Dthe charge released

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Question 887

jamb 2010

In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be

Asouth and north

Bnorth and south

Cnorth and north

Dsouth and south

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Question 888

jamb 2010

In the diagram above, a 200 W bulb is lighted by a 240 V a.c mains supply. If 1kwh is sold at N40, the cost of keeping the bulb lighted for a day is?

AN1,920.00

BN192.00

CN19.20

DN1.92

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Question 889

jamb 2010

Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them. What is the total current in the circuit?

A14 A

B12 A

C10 A

D8 A

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Question 890

jamb 2010

The diagram above shows a balanced metre bridge, the value of x is

A75.0 cm

B66.7 cm

C33.3 cm

D25.0 cm

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