NECO SSCE - Physics - 2002 (Objective)

Vraag 1 Verslag

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 Juist antwoord

concentrating electrons on the target

heating the anode

heating the cathode

producing a stream of electrons

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Lees lesnotitie op Electric Field (WAEC)

Electric Field

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Vraag 2 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Heat Transfer (JAMB)

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Heat Transfer

Temperature And Its Measurement

Bekijk antwoord

Vraag 3 Verslag

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 Juist antwoord

400m

330m

165m

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Lees lesnotitie op Sound Waves (WAEC)

Lees lesnotitie op Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

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Vraag 4 Verslag

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 Juist antwoord

wave-particle paradox

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Lees lesnotitie op Wave-particle Paradox (WAEC)

Lees lesnotitie op Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Wave-particle Paradox

Properties Of Waves: Reflection, Refraction, Diffraction

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Vraag 5 Verslag

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 Juist antwoord

The nucleus of an atom is positively charged

The nucleus is surrounded by an electron cloud.

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Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Vraag 6 Verslag

What is stored by a dry Leclanhé cell?

chemical energy Juist antwoord

heat energy

mechanical energy

nuclear energy

solar energy

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Lees lesnotitie op Electric Cells (JAMB)

Electric Cells

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Vraag 7 Verslag

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° Juist antwoord

45°

60°

90°

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Lees lesnotitie op Motion (JAMB)

Motion

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Vraag 8 Verslag

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

hot-wire ammeter Juist antwoord

moving-coil ammeter

moving-coil loudspeaker

moving-iron ammeter

telephone earpiece

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Lees lesnotitie op Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

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Vraag 9 Verslag

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 Juist antwoord

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Lees lesnotitie op Thermal Expansion (JAMB)

Thermal Expansion

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Vraag 10 Verslag

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 Juist antwoord

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Lees lesnotitie op Pressure (JAMB)

Pressure

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Vraag 11 Verslag

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 Juist antwoord

II only

III only

I and II only

II and Ill only

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Lees lesnotitie op Motion (JAMB)

Motion

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Vraag 12 Verslag

The phenomenon of photoelectric effect is NOT used in

automatic doors

bimetallic strip thermometers Juist antwoord

light meters in cameras

setting off burglar alarms

sound production from film tracks.

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Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Vraag 13 Verslag

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 Juist antwoord

iron, copper, aluminium

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Lees lesnotitie op Heat Transfer (JAMB)

Lees lesnotitie op Equilibrium Of Forces (WAEC)

Heat Transfer

Equilibrium Of Forces

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Vraag 14 Verslag

Which of the following is a percussion instrument?

bell Juist antwoord

flute

guitar

piano

organ

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Lees lesnotitie op Thermal Expansion (JAMB)

Thermal Expansion

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Vraag 15 Verslag

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

green

indigo

red Juist antwoord

violet

yellow

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Lees lesnotitie op Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Vraag 16 Verslag

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 Juist antwoord

6.0g

0.4g

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Lees lesnotitie op Current Electricity (JAMB)

Current Electricity

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Vraag 17 Verslag

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 Juist antwoord

3.56 × 107ms^-1

6.00 × 107ms^-1

1.20 × 108ms^-1

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Lees lesnotitie op Gravitational Field (WAEC)

Gravitational Field

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Vraag 18 Verslag

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 Juist antwoord

18 ms^-1

32 ms^-1

36 ms^-1

48 ms^-1

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Lees lesnotitie op Newton’s Laws Of Motion (WAEC)

Lees lesnotitie op Motion (JAMB)

Newton’s Laws Of Motion

Motion

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Vraag 19 Verslag

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 Juist antwoord

3.60N

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Lees lesnotitie op Pressure (JAMB)

Lees lesnotitie op Elasticity (JAMB)

Pressure

Elasticity

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Vraag 20 Verslag

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 Juist antwoord

none

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Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Lees lesnotitie op Electrostatics (JAMB)

Structure Of The Atom (Nigeria Only)

Electrostatics

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Vraag 21 Verslag

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

accommodation Juist antwoord

astigmatism

eye ring

myopia

presbyopia

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Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Vraag 22 Verslag

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 Juist antwoord

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.

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Lees lesnotitie op Thermal Expansion (JAMB)

Thermal Expansion

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Vraag 23 Verslag

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 Juist antwoord

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Lees lesnotitie op Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Vraag 24 Verslag

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 Juist antwoord

II and III only

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Lees lesnotitie op Structure Of The Nucleus (WAEC)

Structure Of The Nucleus

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Vraag 25 Verslag

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 Juist antwoord

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Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Reflection Of Light At Plane And Curved Surfaces (JAMB)

Current Electricity

Reflection Of Light At Plane And Curved Surfaces

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Vraag 26 Verslag

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 Juist antwoord

decreasing the mass of the pendulum

increasing the length of the pendulum

increasing the mass of the pendulum.

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Lees lesnotitie op Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Vraag 27 Verslag

Which is a fundamental unit?

ampere Juist antwoord

joule

Newton

ohm

watt

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Lees lesnotitie op Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

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Vraag 28 Verslag

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 Juist antwoord

18.0cm

360cm

72.0cm

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Lees lesnotitie op Production And Propagation Of Waves (WAEC)

Lees lesnotitie op Sound Waves (WAEC)

Lees lesnotitie op Introductory Electronics (JAMB)

Lees lesnotitie op Types Of Waves (WAEC)

Production And Propagation Of Waves

Sound Waves

Introductory Electronics

Types Of Waves

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Vraag 29 Verslag

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 Juist antwoord

specific heat

specific heat capacity

specific latent heat.

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Lees lesnotitie op Heat Energy (WAEC)

Lees lesnotitie op Quantity Of Heat (JAMB)

Lees lesnotitie op Elasticity (JAMB)

Heat Energy

Quantity Of Heat

Elasticity

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Vraag 30 Verslag

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% Juist antwoord

92.50%

100%

Antwoorddetails

Bekijk antwoord

Vraag 31 Verslag

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

16V

200V

4000V Juist antwoord

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Lees lesnotitie op Capacitors (JAMB)

Lees lesnotitie op Current Electricity (JAMB)

Capacitors

Current Electricity

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Vraag 32 Verslag

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 Juist antwoord

N1.00

N5.00

N10.00

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Lees lesnotitie op Current Electricity (JAMB)

Current Electricity

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Vraag 33 Verslag

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 Juist antwoord

increase gradually

remain the same

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Lees lesnotitie op Change Of State (JAMB)

Change Of State

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Vraag 34 Verslag

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

the slip rings with split-ring commutators Juist antwoord

the slip rings with armatures

the split-rings with slip rings

the split-rings with brushes

the brushes with slip-ring commutators.

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Lees lesnotitie op Capacitors (JAMB)

Lees lesnotitie op Electromagnetic Field (Part 2) (WAEC)

Capacitors

Electromagnetic Field (Part 2)

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Vraag 35 Verslag

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. Juist antwoord

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Lees lesnotitie op Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Vraag 36 Verslag

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

claw hammer

nut crackers

pliers

sugar tongs Juist antwoord

wheelbarrow

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Lees lesnotitie op Simple Machines (JAMB)

Simple Machines

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Vraag 37 Verslag

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 Juist antwoord

Antwoorddetails

Bekijk antwoord

Vraag 38 Verslag

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 Juist antwoord

6.4

3.6

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Lees lesnotitie op Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Vraag 39 Verslag

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 Juist antwoord

6.7cm

20.0cm

25.0cm

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Lees lesnotitie op Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lees lesnotitie op Electrostatics (JAMB)

Properties Of Waves: Reflection, Refraction, Diffraction

Electrostatics

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Vraag 40 Verslag

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 ° Juist antwoord

62.7 °

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Lees lesnotitie op Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Vraag 41 Verslag

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 Juist antwoord

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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Lees lesnotitie op Electric Field (WAEC)

Electric Field

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Vraag 42 Verslag

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

diaphragm Juist antwoord

film

focusing ring

lens

shutter

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Lees lesnotitie op Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

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Vraag 43 Verslag

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