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2,483 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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2,483 questions

Question 1 of 20 2,483 total questions

Question 821

jamb 1997

Two bodies X and Y are projected on the same horizontal plane, with the same initial speed but at angles 30 and 60 respectively to the horizontal. Neglecting air resistance, the ratio of the range of X to that of Y is

A1:1

B1:2

C√3:1

D√3

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Question 822

jamb 1997

An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is

A15.0 ms^-1

B7.5 ms^-1

C3.8 ms^-1

D3.0 ms^-1

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Question 823

jamb 1997

A 5kg block is released from rest on a smooth plane inclined at an angle of 30^o to the horizontal. What is the acceleration down the plane? [g = 10ms^-2]

A5.0 ms^-2

B5.8 ms^-2

C8.7 ms^-2

D25.0 ms^-2

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Question 824

jamb 1997

The distance x m travelled by a particle in time t seconds is described by the equation x = 10 + 12t\(^2\), Find the average speed of the particle between the time interval t = 2s and t = 5s

A60 ms^-1

B72 ms^-1

C84 ms^-1

D108 ms^-1

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Question 825

jamb 1997

At what respective values of X, Y and Z would the unit of force, the newton, be dimensionally equivalent to MxLyTz?

A-1, 1, 2

B1, 1, -2

C1, -1, 2

D-1, 1, -2

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Question 826

jamb 1995

The resultant capacitance in the fig above is

A15.0µF

B9.8µF

C1.3µF

D0.8µF

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Question 827

jamb 1995

The fig above shows two similar bulbs X and Y connected to suitable power supply with F as an appropriate fuse rating, if the filament of X breaks then the

ABrightness Of Y will reduce

BBrightness Of Y will remain constant

CBrightness Of Y will increase

Dfuse F will blow

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Question 828

jamb 1995

A body of mass 40kg is being dragged along the floor by a rope inclined at 60 degrees to the horizontal. The frictional force between the box and the floor is 100N and the tension on the rope is 300N. How much work is done by dragging the box for a distance of 4m

A680J

B400J

C200J

D100J

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Question 829

jamb 1995

The acceleration of the system show above is

A2ms^-2

B4ms^-2

C6ms^-2

D8ms^-2

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Question 830

jamb 1995

The value of T in the figure above is

A10.0N

B11.8N

C20.0N

D40.0N

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Question 831

jamb 1995

In the above fig, PQ and R are vectors, which of the following options, gives a correct relationship between the vectors?

AP = Q + R

BP = Q - R

CP = R - Q

DP + Q + R = O

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Question 832

jamb 1995

An alternating source is connected in series to a capacitor of capacity reactance \( 10^3 \sqrt{3} \) and a resistor of resistance 10³ Ohms. The Impedance of the circuit is...

A\( 2000 \sqrt{3} \) Ohms

B2000 Ohms

C\( 1000 \sqrt{3} \) Ohms

D1000 Ohms

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Question 833

jamb 1995

The half-life of a radio-active element is 9 days, what fraction of atoms has decayed in 36 days?

A\( \frac{1}{16} \)

B\( \frac{1}{4} \)

C\( \frac{1}{2} \)

D\( \frac{15}{16} \)

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Question 834

jamb 1995

A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is

A0.4eV

B2.5eV

C3.0eV

D7.0eV

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Question 835

jamb 1995

The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be

A3V

B6V

C24V

D48V

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Question 836

jamb 1995

Which of the following is required to convert a milliammeter to an ammeter?

AA high resistance in parallel

BA high resistance in series

CA low resistance in parallel

DA low resistance in series

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Question 837

jamb 1995

If the maximum voltage across a 100ohms resistor is 20V, then the maximum power it can dissipate is

A5.00W

B4.00W

C2.00W

D25W

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Question 838

jamb 1995

An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3 minutes 20 seconds. Determine the heat produced

A0.5kJ

B8.0kJ

C20.0kJ

D40.0kJ

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Question 839

jamb 1995

The purpose of a dielectric material in a parallel plate capacitor is to

Aincrease its capacitance

Bdecrease its capacitance

Cinsulate the plate from each other

Dincrease the magnetic field between the plates

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Question 840

jamb 1995

A 12V battery has an internal resistance of 0.5W.If a cable of 1.0W resistance is connected across the two terminals of the battery, the current drawn from the battery is

A16.0A

B8.0A

C0.8A

D0.4A

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