NECO SSCE - Physics - 2002 (Objective)

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 Resposta correta

6.4

3.6

Detalhes da Resposta

Ler a nota de aula em Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Ver Resposta

Pergunta 5 Relatório

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 Resposta correta

3.60N

Detalhes da Resposta

Ler a nota de aula em Pressure (JAMB)

Ler a nota de aula em Elasticity (JAMB)

Pressure

Elasticity

Ver Resposta

Pergunta 6 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Pressure (JAMB)

Pressure

Ver Resposta

Pergunta 7 Relatório

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. Resposta correta

Detalhes da Resposta

Ler a nota de aula em Vapours (JAMB)

Vapours

Ver Resposta

Pergunta 8 Relatório

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 Resposta correta

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.

Detalhes da Resposta

Ler a nota de aula em Electric Field (WAEC)

Electric Field

Ver Resposta

Pergunta 9 Relatório

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 Resposta correta

Detalhes da Resposta

Ver Resposta

Pergunta 10 Relatório

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 Resposta correta

400m

330m

165m

Detalhes da Resposta

Ler a nota de aula em Sound Waves (WAEC)

Ler a nota de aula em Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

Ver Resposta

Pergunta 11 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Heat Transfer (JAMB)

Ler a nota de aula em Temperature And Its Measurement (JAMB)

Heat Transfer

Temperature And Its Measurement

Ver Resposta

Pergunta 12 Relatório

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

the slip rings with split-ring commutators Resposta correta

the slip rings with armatures

the split-rings with slip rings

the split-rings with brushes

the brushes with slip-ring commutators.

Detalhes da Resposta

Ler a nota de aula em Capacitors (JAMB)

Ler a nota de aula em Electromagnetic Field (Part 2) (WAEC)

Capacitors

Electromagnetic Field (Part 2)

Ver Resposta

Pergunta 13 Relatório

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 Resposta correta

The nucleus of an atom is positively charged

The nucleus is surrounded by an electron cloud.

Detalhes da Resposta

Ler a nota de aula em Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Ver Resposta

Pergunta 14 Relatório

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 Resposta correta

6.7cm

20.0cm

25.0cm

Detalhes da Resposta

Ler a nota de aula em Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Ler a nota de aula em Electrostatics (JAMB)

Properties Of Waves: Reflection, Refraction, Diffraction

Electrostatics

Ver Resposta

Pergunta 15 Relatório

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 Resposta correta

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.

Detalhes da Resposta

Ler a nota de aula em Thermal Expansion (JAMB)

Thermal Expansion

Ver Resposta

Pergunta 16 Relatório

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 Resposta correta

18 ms^-1

32 ms^-1

36 ms^-1

48 ms^-1

Detalhes da Resposta

Ler a nota de aula em Newton’s Laws Of Motion (WAEC)

Ler a nota de aula em Motion (JAMB)

Newton’s Laws Of Motion

Motion

Ver Resposta

Pergunta 17 Relatório

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 Resposta correta

6.0g

0.4g

Detalhes da Resposta

Ler a nota de aula em Current Electricity (JAMB)

Current Electricity

Ver Resposta

Pergunta 18 Relatório

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 Resposta correta

decreasing the mass of the pendulum

increasing the length of the pendulum

increasing the mass of the pendulum.

Detalhes da Resposta

Ler a nota de aula em Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

Ver Resposta

Pergunta 19 Relatório

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° Resposta correta

45°

60°

90°

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

Motion

Ver Resposta

Pergunta 20 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Electromagnetic Field (Part 2) (WAEC)

Ler a nota de aula em Electromagnetic Field (Part 1) (WAEC)

Electromagnetic Field (Part 2)

Electromagnetic Field (Part 1)

Ver Resposta

Pergunta 21 Relatório

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 Resposta correta

18.0cm

360cm

72.0cm

Detalhes da Resposta

Ler a nota de aula em Production And Propagation Of Waves (WAEC)

Ler a nota de aula em Sound Waves (WAEC)

Ler a nota de aula em Introductory Electronics (JAMB)

Ler a nota de aula em Types Of Waves (WAEC)

Production And Propagation Of Waves

Sound Waves

Introductory Electronics

Types Of Waves

Ver Resposta

Pergunta 22 Relatório

What is stored by a dry Leclanhé cell?

chemical energy Resposta correta

heat energy

mechanical energy

nuclear energy

solar energy

Detalhes da Resposta

Ler a nota de aula em Electric Cells (JAMB)

Electric Cells

Ver Resposta

Pergunta 23 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Electromagnetic Field (Part 2) (WAEC)

Ler a nota de aula em Electrostatics (JAMB)

Electromagnetic Field (Part 2)

Electrostatics

Ver Resposta

Pergunta 24 Relatório

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% Resposta correta

92.50%

100%

Detalhes da Resposta

Ver Resposta

Pergunta 25 Relatório

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

accommodation Resposta correta

astigmatism

eye ring

myopia

presbyopia

Detalhes da Resposta

Ler a nota de aula em Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Ver Resposta

Pergunta 26 Relatório

Which of the following is a percussion instrument?

bell Resposta correta

flute

guitar

piano

organ

Detalhes da Resposta

Ler a nota de aula em Thermal Expansion (JAMB)

Thermal Expansion

Ver Resposta

Pergunta 27 Relatório

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 Resposta correta

II and III only

Detalhes da Resposta

Ler a nota de aula em Structure Of The Nucleus (WAEC)

Structure Of The Nucleus

Ver Resposta

Pergunta 28 Relatório

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 Resposta correta

3.56 × 107ms^-1

6.00 × 107ms^-1

1.20 × 108ms^-1

Detalhes da Resposta

Ler a nota de aula em Gravitational Field (WAEC)

Gravitational Field

Ver Resposta

Pergunta 29 Relatório

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 Resposta correta

to fuse all the circuit into one

Detalhes da Resposta

Ler a nota de aula em Capacitors (JAMB)

Ler a nota de aula em Electrostatics (JAMB)

Capacitors

Electrostatics

Ver Resposta

Pergunta 30 Relatório

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 Resposta correta

increase gradually

remain the same

Detalhes da Resposta

Ler a nota de aula em Change Of State (JAMB)

Change Of State

Ver Resposta

Pergunta 31 Relatório

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 Resposta correta

concentrating electrons on the target

heating the anode

heating the cathode

producing a stream of electrons

Detalhes da Resposta

Ler a nota de aula em Electric Field (WAEC)

Electric Field

Ver Resposta

Pergunta 32 Relatório

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

erect, real and magnified image

erect, virtual and magnified image Resposta correta

inverted, virtual and magnified image

inverted, real and magnified image

inverted and real image the same size as the object

Detalhes da Resposta

Ler a nota de aula em Electrostatics (JAMB)

Electrostatics

Ver Resposta

Pergunta 33 Relatório

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 Resposta correta

II only

III only

I and II only

II and Ill only

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

Motion

Ver Resposta

Pergunta 34 Relatório

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 Resposta correta

N1.00

N5.00

N10.00

Detalhes da Resposta

Ler a nota de aula em Current Electricity (JAMB)

Current Electricity

Ver Resposta

Pergunta 35 Relatório

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 Resposta correta

specific heat

specific heat capacity

specific latent heat.

Detalhes da Resposta

Ler a nota de aula em Heat Energy (WAEC)

Ler a nota de aula em Quantity Of Heat (JAMB)

Ler a nota de aula em Elasticity (JAMB)

Heat Energy

Quantity Of Heat

Elasticity

Ver Resposta

Pergunta 36 Relatório

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. Resposta correta

Detalhes da Resposta

Ler a nota de aula em Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Ver Resposta

Pergunta 37 Relatório

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 ° Resposta correta

62.7 °

Detalhes da Resposta

Ler a nota de aula em Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

Ver Resposta

Pergunta 38 Relatório

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 Resposta correta

none

Detalhes da Resposta

Ler a nota de aula em Structure Of The Atom (Nigeria Only) (WAEC)

Ler a nota de aula em Electrostatics (JAMB)

Structure Of The Atom (Nigeria Only)

Electrostatics

Ver Resposta

Pergunta 39 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

Ver Resposta

Pergunta 40 Relatório

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 Resposta correta

Detalhes da Resposta

Ler a nota de aula em Current Electricity (JAMB)

Ler a nota de aula em Reflection Of Light At Plane And Curved Surfaces (JAMB)

Current Electricity

Reflection Of Light At Plane And Curved Surfaces

Ver Resposta

Pergunta 41 Relatório

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 Resposta correta

wave-particle paradox

Detalhes da Resposta

Ler a nota de aula em Wave-particle Paradox (WAEC)

Ler a nota de aula em Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Wave-particle Paradox

Properties Of Waves: Reflection, Refraction, Diffraction

Ver Resposta

Pergunta 42 Relatório

The phenomenon of photoelectric effect is NOT used in

automatic doors

bimetallic strip thermometers Resposta correta

light meters in cameras

setting off burglar alarms

sound production from film tracks.

Detalhes da Resposta

Ler a nota de aula em Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Ver Resposta

Pergunta 43 Relatório

Which is a fundamental unit?

ampere Resposta correta

joule

Newton

ohm

watt

Detalhes da Resposta

Ler a nota de aula em Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

Ver Resposta

Pergunta 44 Relatório

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

diaphragm Resposta correta

film

focusing ring

lens

shutter

Detalhes da Resposta

Ler a nota de aula em Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Ver Resposta

Pergunta 45 Relatório

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

hot-wire ammeter Resposta correta

moving-coil ammeter

moving-coil loudspeaker

moving-iron ammeter

telephone earpiece

Detalhes da Resposta

Ler a nota de aula em Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

Ver Resposta

Pergunta 46 Relatório

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 Resposta correta

iron, copper, aluminium

Detalhes da Resposta

Ler a nota de aula em Heat Transfer (JAMB)

Ler a nota de aula em Equilibrium Of Forces (WAEC)

Heat Transfer

Equilibrium Of Forces

Ver Resposta

Pergunta 47 Relatório

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

green

indigo

red Resposta correta

violet

yellow

Detalhes da Resposta

Ler a nota de aula em Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

Ver Resposta

Pergunta 48 Relatório

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 Resposta correta

M₂U ÷ M₁ + M₂

Detalhes da Resposta

Ler a nota de aula em Rectilinear Acceleration (WAEC)

Ler a nota de aula em Equilibrium Of Forces (WAEC)

Rectilinear Acceleration

Equilibrium Of Forces

Ver Resposta






Pressione e Mantenha para Arrastar
Clique aqui para fechar