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185 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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185 questions

Question 1 of 20 185 total questions

Question 21

waec 2024

The law of conservation of momentum is stated for closed and isolated system. What are the two conditions for a system to be closed and isolated?

ANo external force acts on the system and there is no change in mass of the system.

BNo external force acts on the system and there is a gain in mass.

CNo external force acts on the system and there is a loss in mass.

DAn external force acts on the system and there is no change in mass.

View Explanation & Discuss

Question 22

waec 2024

A body moves with uniform velocity when the resultant force on it is

Agreater than the frictional force acting on it

Bless than the frictional force acting on it

Cequal to zero

Dequal to unity

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Question 23

waec 2024

The function of a fuse in an electric circuit is to

Abreak the circuit when the current exceeds a certain value

Bsave energy by reducing voltage

Censure that the current in the circuit exceeds a certain value

Dsave energy by reducing the current

View Explanation & Discuss

Question 24

waec 2024

A ray of light travels from a less dense medium to a denser medium. How are the speed and frequency of the light affected? The speed

AIncreases and the frequency increases

Bdecreases and the frequency decreases

Cincreases and the frequency remains the same

Ddecreases and the frequency remains the same

View Explanation & Discuss

Question 25

waec 2024

The diagram above illustrates the motion of a cyclist from P to R. The distance travelled is determined by the

Aarea under QR

Barea under PQR

Cgradient of PQR

Dgradient of QR

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Question 26

waec 2024

The capacitance of a parallel plate capacitor

Adecreases when the temperature between the plates decreases

Bincreases when the potential difference between the plates is increased

Cis greater without a dielectric between the plates than with dielectric

Dis greater with dielectric between the plates than without dielectric.

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Question 27

waec 2024

What are cathode rays?

AStream of electrons

BBeam of neutrons

CBeam of protons

DStream of alpha particles

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Question 28

waec 2024

In which of the following states is MAXIMUM pressure exerted on a person

AStanding on two feet

BStanding on one foot

CLying on the floor

DKneeling on the floor

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Question 29

waec 2024

The magnitude of the acceleration of a moving object is equal to the

Agradient of a displacement-time graph

Bgradient of a velocity-time graph

Carea below a force-time graph

Darea below a velocity-time graph

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Question 30

waec 2024

The vacuum and silvered wall surfaces of a vacuum flask walls are respectively

Aminimize conduction and convection and prevent radiation

Bprevent conduction and convection and minimize radiation

Cprevent conduction and minimize convection and radiation

Dminimize convection and prevent conduction and radiation

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Question 31

jamb 2024

A boy standing 408m from a wall blew a trumpet and heard the echo 2.4s later. Calculate the speed of the sound

A310m/s

B320m/s

C330m/s

D340m/s

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Question 32

jamb 2024

The dimension of power is

AML\(^2\)T\(^{-3}\)

BML\(^1\)T\(^2\)

CML\(^2\)T\(^{-2}\)

DMLT\(^2\)

View Explanation & Discuss

Question 33

jamb 2024

An example of a non-rechargeable cell is

Anickel iron

Bmercury cadmium

Cdry leclanche

Dlead-acid

View Explanation & Discuss

Question 34

jamb 2024

The acceleration of a free fall due to gravity is not a constant everywhere on the Earth's surface because

Amass of the earth

Belliptical shape of the earth

Cvariation in the density of the earth

Drotation of the earth about its axis

View Explanation & Discuss

Question 35

jamb 2024

Find the amount of current required to deposit 0.02kg of metal in a given electrolysis for 120 seconds. [electro chemical equivalent of the metal = 1.3 x 10\(^{-7}\)kgC\(^{-1}\)]

A7.8 x 10\(^{-4}\)A

B7.8 x 10\(^{-2}\)A

C1.3 x 10\(^3\)A

D1.3 x 10\(^5\)A

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Question 36

jamb 2024

Using the circuit above, at resonance

AV\(_L\) = V\(_R\)

BV\(_R\) = V\(_R\)

CV\(_L\) = V\(_L\)

DV\(_L\) = V\(_C\)

View Explanation & Discuss

Question 37

jamb 2024

Photometer is used to measure

AKinetic energy of liberated electrons

BIntensity of light

Cfrequency of light

Dwavelength of light

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Question 38

jamb 2024

As per Faraday's laws of electromagnetic induction, an e.m.f is induced in a conductor whenever

Alies parallel to the magnetic flux

Blies in a magnetic field

Clies out side but close to a magnetic field

Dcuts magnetic flux

View Explanation & Discuss

Question 39

jamb 2024

One of these is not the use of an electroscope

Atesting the type of charge on a charge body

Bmeasuring ionization current in air

Cdetecting the pressure of charge on a charged body

Dproducing electric charge in a body

View Explanation & Discuss

Question 40

jamb 2024

The bursting of water pipes during very cold weather, when the water in the pipes form ice could be attributed to

Acontraction of pipes when cooled

Bexpansion of water on freezing

Ccontraction of water on freezing

Dexpansion of ice on melting

View Explanation & Discuss

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