NECO SSCE - Physics - 2002 (Objective)

Frage 1 Bericht

An air bubble of volume 4cm³ is formed 20m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10cm of water?

2cm³

4cm³

6cm³

8cm³

12cm³ Richtige Antwort

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Lies die Unterrichtsnotiz zu Pressure (JAMB)

Pressure

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Frage 2 Bericht

What does NOT affect the rate of evaporation of a liquid

exposed surface area of the liquid

humidity of the surroundings

nature of the liquid

temperature the liquid

volume of the liquid. Richtige Antwort

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Lies die Unterrichtsnotiz zu Vapours (JAMB)

Vapours

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Frage 3 Bericht

When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte?

30.0g

24.0g

10.0g Richtige Antwort

6.0g

0.4g

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Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Current Electricity

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Frage 4 Bericht

A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If it has a maximum

1100ms^-1

440 ms^-1

220 ms^-1

22 ms^-1

2.2ms^-1 Richtige Antwort

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Lies die Unterrichtsnotiz zu Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Frage 5 Bericht

An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?

0.10N

0.36N

0.80N

1.00N Richtige Antwort

3.60N

Antwortdetails

Lies die Unterrichtsnotiz zu Pressure (JAMB)

Lies die Unterrichtsnotiz zu Elasticity (JAMB)

Pressure

Elasticity

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Frage 6 Bericht

The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals?

16V

200V

4000V Richtige Antwort

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Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Capacitors

Current Electricity

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Frage 7 Bericht

A block of ice of mass 10kg at 0°C absorbs heat energy from its surroundings and changes to water at the same temperature. The heat absorbed is referred to as

heat capacity

latent heat Richtige Antwort

specific heat

specific heat capacity

specific latent heat.

Antwortdetails

Lies die Unterrichtsnotiz zu Heat Energy (WAEC)

Lies die Unterrichtsnotiz zu Quantity Of Heat (JAMB)

Lies die Unterrichtsnotiz zu Elasticity (JAMB)

Heat Energy

Quantity Of Heat

Elasticity

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Frage 8 Bericht

An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?

10k

50k Richtige Antwort

N1.00

N5.00

N10.00

Antwortdetails

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Current Electricity

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Frage 9 Bericht

Which colour is deviated least when white light passes through a triangular prism?

green

indigo

red Richtige Antwort

violet

yellow

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Lies die Unterrichtsnotiz zu Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Frage 10 Bericht

A brass cube of side 10cm is heated through 30°C. If the linear expansivity of brass is 2.0 × I0\(^{-5}\) K-1 , what is the increase in its volume?

0.06 cm³

0.18cm³

0.60cm³

1.20cm³

1.80cm³ Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Thermal Expansion (JAMB)

Thermal Expansion

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Frage 11 Bericht

An a.c. generator can be converted into a d.c. generator by replacing

the slip rings with split-ring commutators Richtige Antwort

the slip rings with armatures

the split-rings with slip rings

the split-rings with brushes

the brushes with slip-ring commutators.

Antwortdetails

Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 2) (WAEC)

Capacitors

Electromagnetic Field (Part 2)

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Frage 12 Bericht

Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?

Alpha rays

Gamma rays

Positive rays

Ultraviolet rays

X-rays Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 2) (WAEC)

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 1) (WAEC)

Electromagnetic Field (Part 2)

Electromagnetic Field (Part 1)

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Frage 13 Bericht

The ability of the eye to focus on objects at various distances is known as

accommodation Richtige Antwort

astigmatism

eye ring

myopia

presbyopia

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Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Frage 14 Bericht

A negatively charged rod is brought near the cap of an electroscope. The cap is earthed momentarily while the charge is near to it. The rod is then removed. Which statement is correct?

The cap will be positively charged and the will be negatively charged

The cap will be negatively charged and the leaf will be positively changed

The cap and the leaf will be positively charged

The cap and the leaf will be negatively charged Richtige Antwort

none

Antwortdetails

Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Structure Of The Atom (Nigeria Only)

Electrostatics

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Frage 15 Bericht

A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How far from the lens is the object?

2.0cm

4.0 cm Richtige Antwort

6.7cm

20.0cm

25.0cm

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Lies die Unterrichtsnotiz zu Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Properties Of Waves: Reflection, Refraction, Diffraction

Electrostatics

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Frage 16 Bericht

A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A from the mains when used to light a 12V, 24W lamp, what is its efficiency?

57.20%

66.60%

83.30% Richtige Antwort

92.50%

100%

Antwortdetails

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Frage 17 Bericht

The use of electrical fuses in domestic wiring is

to prevent and electrical shock

to supply electricity to all the electrical appliances

to allow electricity to flow easily through the mains to all the circuits

to cut off the mains supply it too high a current flows Richtige Antwort

to fuse all the circuit into one

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Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Capacitors

Electrostatics

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Frage 18 Bericht

In the normal use of a simple microscope, a person sees an

erect, real and magnified image

erect, virtual and magnified image Richtige Antwort

inverted, virtual and magnified image

inverted, real and magnified image

inverted and real image the same size as the object

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Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 19 Bericht

A body of mass 4 kg is accelerated from rest by a steady force of 9N. What is its speed when it has travelled a distance of 8m?

6 ms^-1 Richtige Antwort

18 ms^-1

32 ms^-1

36 ms^-1

48 ms^-1

Antwortdetails

Lies die Unterrichtsnotiz zu Newton’s Laws Of Motion (WAEC)

Lies die Unterrichtsnotiz zu Motion (JAMB)

Newton’s Laws Of Motion

Motion

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Frage 20 Bericht

Which statement is NOT correct about Rutherford’s model of the atom?

The diameter of the nucleus is of the order of 10-15m

The mass of an atom is concentrated in the nucleus

The model is applicable to atoms with one electron in the outer shell Richtige Antwort

The nucleus of an atom is positively charged

The nucleus is surrounded by an electron cloud.

Antwortdetails

Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Frage 21 Bericht

According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?

a decrease in the mean speed kinetic energy of the molecules Richtige Antwort

an increase in the mean speed of the molecules

an increase in the momentum change at each collision.

an increase in the number of collisions per second

an increase in the pressure exerted by the gas.

Antwortdetails

Lies die Unterrichtsnotiz zu Thermal Expansion (JAMB)

Thermal Expansion

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Frage 22 Bericht

A man stands in front f a high wall and produces a sound. If he receives the echo of the sound four seconds later, what is his distance from the wall? [The speed of sound in air is 330ms^-1]

1320m

660m Richtige Antwort

400m

330m

165m

Antwortdetails

Lies die Unterrichtsnotiz zu Sound Waves (WAEC)

Lies die Unterrichtsnotiz zu Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

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Frage 23 Bericht

A body of mass M₁ moving with a velocity U collides with a stationary body of mass M₂ and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?

M₁ + M₂ ÷ M₁U

M₂U ÷ M₁ – M₂

M₁U ÷ M₁ – M₂

M₁U ÷ M₁+ M₂ Richtige Antwort

M₂U ÷ M₁ + M₂

Antwortdetails

Lies die Unterrichtsnotiz zu Rectilinear Acceleration (WAEC)

Lies die Unterrichtsnotiz zu Equilibrium Of Forces (WAEC)

Rectilinear Acceleration

Equilibrium Of Forces

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Frage 24 Bericht

An object is projected with a velocity of 50ms^-1 from ground level at an angle θ to the vertical. If the total time of flight of the projectile is 5s, what is the value of θ? (g = 10ms^-2)

0°

30° Richtige Antwort

45°

60°

90°

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Lies die Unterrichtsnotiz zu Motion (JAMB)

Motion

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Frage 25 Bericht

A body is uniformly accelerated from rest. Which of the following quantities vary/varies linearly with the square of the time?

I. Displacement
II. Velocity
III. Momentum

I only Richtige Antwort

II only

III only

I and II only

II and Ill only

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Lies die Unterrichtsnotiz zu Motion (JAMB)

Motion

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Frage 26 Bericht

If the refractive index of water is 1.33, what is the critical angle for a water-air boundary?

36.0 °

40.2 °

41.8 °

48.8 ° Richtige Antwort

62.7 °

Antwortdetails

Lies die Unterrichtsnotiz zu Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Frage 27 Bericht

An object 8cm in front of a plane mirror moves at a speed of 6cm s^-1 away from the mirror. What will be the distance separating the object and the image after 2s?

8cm

12cm

20cm

28cm

40cm Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Lies die Unterrichtsnotiz zu Reflection Of Light At Plane And Curved Surfaces (JAMB)

Current Electricity

Reflection Of Light At Plane And Curved Surfaces

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Frage 28 Bericht

If the temperature of a resistance wire is gradually increased, its resistance will

decrease gradually

first increase and then decrease

first increase and then remain the same Richtige Antwort

increase gradually

remain the same

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Lies die Unterrichtsnotiz zu Change Of State (JAMB)

Change Of State

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Frage 29 Bericht

A platinum-resistance thermometer has a resistance of 10 ω at 0°C and 18 ω at 100°C. Assuming that resistance changes uniformly with temperature, what is the resistance of the thermometer when the temperature is 45°C?

27.8

17.8

13.6 Richtige Antwort

6.4

3.6

Antwortdetails

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Frage 30 Bericht

The phenomenon of photoelectric effect is NOT used in

automatic doors

bimetallic strip thermometers Richtige Antwort

light meters in cameras

setting off burglar alarms

sound production from film tracks.

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Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Frage 31 Bericht

Lenz’s law of electromagnetic induction states that

e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit

the induced e.m.f. in a circuit is proportional to the rate of change f the number of lines of force linking the circuit

the induced current in a conductor is in such a direction as to oppose the change producing it Richtige Antwort

a force is exerted in a current-carrying conductor in a magnetic field.

the induced e.m.f. is proportional to the current producing the magnetic flux.

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Lies die Unterrichtsnotiz zu Electric Field (WAEC)

Electric Field

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Frage 32 Bericht

Which of the following is a percussion instrument?

bell Richtige Antwort

flute

guitar

piano

organ

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Lies die Unterrichtsnotiz zu Thermal Expansion (JAMB)

Thermal Expansion

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Frage 33 Bericht

A body of weight 20N displaces 12N of the liquid in which it is immersed. What is the upthrust of the liquid on the body?

240N

32N

20N

12N Richtige Antwort

Antwortdetails

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Frage 34 Bericht

In which of the following are the substances arranged in descending order of their thermal conductivities?

aluminium, copper, iron

aluminium, iron, copper

copper, aluminium, iron

copper, iron. aluminium Richtige Antwort

iron, copper, aluminium

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Lies die Unterrichtsnotiz zu Heat Transfer (JAMB)

Lies die Unterrichtsnotiz zu Equilibrium Of Forces (WAEC)

Heat Transfer

Equilibrium Of Forces

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Frage 35 Bericht

A short response time is obtained in a liquid-in-glass thermometer when the

bulb is large and thick-walled

bulb is small and thick-walled

stem is long and thin

liquid is of high density and the bulb is large

bulb is thin-walled and the liquid is a good conductor of heat. Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Frage 36 Bericht

What is stored by a dry Leclanhé cell?

chemical energy Richtige Antwort

heat energy

mechanical energy

nuclear energy

solar energy

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Lies die Unterrichtsnotiz zu Electric Cells (JAMB)

Electric Cells

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Frage 37 Bericht

If the size of the hole of a pinhole camera is increased, the image formed becomes

brighter and blurred

brighter and larger

brighter and sharper

blurred and duller

blurred and larger Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 2) (WAEC)

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electromagnetic Field (Part 2)

Electrostatics

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Frage 38 Bericht

What part of the camera corresponds to the iris of the eye?

diaphragm Richtige Antwort

film

focusing ring

lens

shutter

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Lies die Unterrichtsnotiz zu Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

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Frage 39 Bericht

Which is a fundamental unit?

ampere Richtige Antwort

joule

Newton

ohm

watt

Antwortdetails

Lies die Unterrichtsnotiz zu Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

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Frage 40 Bericht

What is the escape velocity of a satellite launched from the earth’s surface? (Take g as 10ms^-2 and the radius of the earth as 6.4 × 10⁶m)

7.80 × 10-3ms^-1

1.13 × 10-4ms^-1 Richtige Antwort

3.56 × 107ms^-1

6.00 × 107ms^-1

1.20 × 108ms^-1

Antwortdetails

Lies die Unterrichtsnotiz zu Gravitational Field (WAEC)

Gravitational Field

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Frage 41 Bericht

The silvered walls of a vacuum flask minimise loss of heat due to

conduction and convection

conduction only

convection and radiation

convection only

radiation only Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Heat Transfer (JAMB)

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Heat Transfer

Temperature And Its Measurement

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Frage 42 Bericht

Which device does NOT make use of the magnetic effects of an electric current?

hot-wire ammeter Richtige Antwort

moving-coil ammeter

moving-coil loudspeaker

moving-iron ammeter

telephone earpiece

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Lies die Unterrichtsnotiz zu Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

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Frage 43 Bericht

It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the

Crompton effect

de Broglie’s laws

Frank-Hertz experimental law

Heisenberg’s uncertainly principle Richtige Antwort

wave-particle paradox

Antwortdetails

Lies die Unterrichtsnotiz zu Wave-particle Paradox (WAEC)

Lies die Unterrichtsnotiz zu Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Wave-particle Paradox

Properties Of Waves: Reflection, Refraction, Diffraction

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Frage 44 Bericht

Which process will increase the rate of oscillation of a pendulum?

decreasing the amplitude of oscillation of the pendulum

decreasing the length of the pendulum Richtige Antwort

decreasing the mass of the pendulum

increasing the length of the pendulum

increasing the mass of the pendulum.

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Lies die Unterrichtsnotiz zu Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Frage 45 Bericht

The wavelength of a stationary wave is 36.0cm. What is the distance between a node and the next anti-node?

6.0cm

9.0cm Richtige Antwort

18.0cm

360cm

72.0cm

Antwortdetails

Lies die Unterrichtsnotiz zu Production And Propagation Of Waves (WAEC)

Lies die Unterrichtsnotiz zu Sound Waves (WAEC)

Lies die Unterrichtsnotiz zu Introductory Electronics (JAMB)

Lies die Unterrichtsnotiz zu Types Of Waves (WAEC)

Production And Propagation Of Waves

Sound Waves

Introductory Electronics

Types Of Waves

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Frage 46 Bericht

In an operating X-ray tube, a high p.d is applied between the cathode and the anode for the purpose of

accelerating the electrons to a very high energy Richtige Antwort

concentrating electrons on the target

heating the anode

heating the cathode

producing a stream of electrons

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Lies die Unterrichtsnotiz zu Electric Field (WAEC)

Electric Field

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Frage 47 Bericht

Which of the following is/are TRUE of nuclear fission?

I. A heavy nucleus is split into two nuclei of comparable masses.
II. Two light nuclei are joined together to form a heavier nucleus.
III. The total mass of the products is less than that of the reactants.

I only

II only

III only

I and III only Richtige Antwort

II and III only

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Lies die Unterrichtsnotiz zu Structure Of The Nucleus (WAEC)

Structure Of The Nucleus

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Frage 48 Bericht

In which simple machine is the effort applied between the load and the fulcrum?

claw hammer