NECO SSCE - Physics - 2004 (Objective)

Pergunta 1 Relatório

The resultant of two forces P and Q is least when the angle between them is

0°

45°

60°

90°

180° Resposta correta

Detalhes da Resposta

Ler a nota de aula em Scalars And Vectors (JAMB)

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

Scalars And Vectors

Equilibrium Of Forces

Ver Resposta

Pergunta 2 Relatório

Which of the following conclusion(s) can be drawn from Newton’s second law of motion? Force is proportional to

I. the product of mass and acceleration
II. the product of mass and velocity
III. Impulse

I only

II only

III only

II and III only

I, II and III Resposta correta

Detalhes da Resposta

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

Newton’s Laws Of Motion

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Pergunta 3 Relatório

For total internal reflection to occur,

I. light must be travelling from an optically more dense to an optically less dense medium.
II. the angle of incidence in the denser medium must be greater than its critical angle.
III. the angle of refraction in the less dense medium must be equal to 90 °. Which of the statements above is/are correct?

I only

II only

III only

I and II only Resposta correta

II and III only.

Detalhes da Resposta

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

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

Reflection Of Light At Plane And Curved Surfaces

Refraction Of Light Through Plane And Curved Surfaces

Ver Resposta

Pergunta 4 Relatório

If the distance between the plates of a parallel plate capacitor is decreased, its capacitance

becomes zero

decreases

increases Resposta correta

is halved

remains the same

Detalhes da Resposta

Ler a nota de aula em Capacitors (JAMB)

Capacitors

Ver Resposta

Pergunta 5 Relatório

The rate of diffusion of gases increases with increase(s) in

I. density
II. temperature
III, mass. Which is/are correct?

I only

II only Resposta correta

I and II only

II and III only

I, II and III

Detalhes da Resposta

Ler a nota de aula em Gas Laws (JAMB)

Gas Laws

Ver Resposta

Pergunta 6 Relatório

In which of the following are crystalline structures observable?

I. Gas
II. Liquid
III. Solid

I only

II only

III only Resposta correta

I and III only

II and III only

Detalhes da Resposta

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

Temperature And Its Measurement

Ver Resposta

Pergunta 7 Relatório

In which of these fields are repulsive forces NOT experienced?

I. Magnetic field
II. Gravitational field
III. Electric field

I only

II only Resposta correta

III only

I and III only

II and III only

Detalhes da Resposta

Ler a nota de aula em Electric Field (WAEC)

Ler a nota de aula em Gravitational Field (WAEC)

Electric Field

Gravitational Field

Ver Resposta

Pergunta 8 Relatório

A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)?

The power dissipated in L is greater than zero

The power dissipated in R is zero

The sum of the power dissipated in L and C is equal to that in R

The sum of the power dissipated in L and C is greater than in R

The sum of the power dissipated in L and C is zero Resposta correta

Detalhes da Resposta

Ler a nota de aula em Capacitors (JAMB)

Ler a nota de aula em Simple A.C Circuits (JAMB)

Capacitors

Simple A.C Circuits

Ver Resposta

Pergunta 9 Relatório

Which of the statements about prism binoculars is/are correct? They

I. are a pair of two telescopes mounted side by side
II. reduce the optical path of the light ray from the objective to the eye piece
III, present inverted and diminished image to the viewer
IV. present erect and magnified image to the viewer.

I only

II only

I and II only

I, II and IV only Resposta correta

II, III and IV only

Detalhes da Resposta

Ler a nota de aula em Optical Instruments (JAMB)

Optical Instruments

Ver Resposta

Pergunta 10 Relatório

A note, A from a guitar produces a wave of amplitude 4 mm and frequency 1000 Hz. Another note, B from a whistle produces a similar waveform of amplitude 2 mm and frequency 2200 Hz. If the two notes are compared,

A has a higher pitch than B

A is louder than B. Resposta correta

B has a greater speed than A

B is louder than A

A and B have the same quality

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

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

Motion

Properties Of Waves: Reflection, Refraction, Diffraction

Ver Resposta

Pergunta 11 Relatório

The frequency of a body executing simple harmonic motion when left undisturbed is known as__________ frequency.

damped

forced

free

natural Resposta correta

sinusoidal

Detalhes da Resposta

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

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

Simple Harmonic Motion

Equilibrium Of Forces

Ver Resposta

Pergunta 12 Relatório

The time t₁, t₂ and t₃ for 20 complete oscillations of a simple pendulum experiment are 32.0s, 34.6s and 35.5s respectively. Calculate the mean period of the pendulum.

1.60s

1.70s Resposta correta

1.73s

1.78s

5.11s

Detalhes da Resposta

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

Ler a nota de aula em Work, Energy And Power (WAEC)

Simple Harmonic Motion

Work, Energy And Power

Ver Resposta

Pergunta 13 Relatório

The component of a vector in a given direction is

equal to the magnitude of the resultant vector in that direction

equal to the magnitude of the resultant vector in the opposite direction

its effective magnitude

its effective value in that direction Resposta correta

its effective value in the opposite direction

Detalhes da Resposta

Ler a nota de aula em Scalars And Vectors (WAEC)

Ler a nota de aula em Scalars And Vectors (JAMB)

Scalars And Vectors

Ver Resposta

Pergunta 14 Relatório

Which of the following is used as a depolarizer in a Denial cell?

Ammonium chloride

Copper (II) tetra Oxo sulphate (VI) solution Resposta correta

Manganese (IV) oxide

Tetraoxo sulphate (VI) acid

Water

Detalhes da Resposta

Ler a nota de aula em Current Electricity (JAMB)

Ler a nota de aula em Electric Cells (JAMB)

Current Electricity

Electric Cells

Ver Resposta

Pergunta 15 Relatório

Heat

I. is a form of energy
II. is measured with a thermometer
III. cannot be created or destroyed
IV. from a hot object is transferred through conduction only. Which of the statements above are correct?

I and II only

I and III only Resposta correta

I, II and III only

II, III and IV only

I, II, III and IV

Detalhes da Resposta

Ler a nota de aula em Heat Energy (WAEC)

Heat Energy

Ver Resposta

Pergunta 16 Relatório

When the same amount of current, I is passed through different wires under the same conditions, the rates of production of heat are

directly proportional to I

directly proportional to the resistances of the wires Resposta correta

directly proportional to the square of the resistances of the wires

inversely proportional to I

inversely proportional to the resistance of the wires

Detalhes da Resposta

Ler a nota de aula em Electrostatics (JAMB)

Electrostatics

Ver Resposta

Pergunta 17 Relatório

How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340ms^-1]

186m

272m Resposta correta

544m

1088m

2000m

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 18 Relatório

Calculate the magnitude of the electric field intensity in vacuum at a distance of 25cm from a charge of 5 × 10^-3C. [Take 1/4πε₀]

7.2 × 108NC^-1 Resposta correta

1.8 × 108NC^-1

5.6 × 108NC^-1

3.6 × 108NC^-1

1.5 × 106NC^-1

Detalhes da Resposta

Ler a nota de aula em Electric Field (WAEC)

Electric Field

Ver Resposta

Pergunta 19 Relatório

A ray of light experiences a minimum deviation when passing through an equilateral triangular glass prism. Calculate the angle of incidence of the ray. [Refractive index of glass = 1.5]

300.0°

48.6° Resposta correta

60.0°

75.5°

105.0 °

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 20 Relatório

A surface in the path of an advancing wave on which all the particles are in the same state of disturbance is called a

crest

cycle

pulse

trough

wave front Resposta correta

Detalhes da Resposta

Ler a nota de aula em Sound Waves (WAEC)

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

Ler a nota de aula em Light Waves (WAEC)

Sound Waves

Properties Of Waves: Reflection, Refraction, Diffraction

Light Waves

Ver Resposta

Pergunta 21 Relatório

A body has masses of 0.013kg and 0.012 kg in oil and water respectively. If the relative density of oil is 0.875 calculate the mass of the body.

0.02 kg Resposta correta

0.03kg

0.04kg

0.05kg

0.06kg

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

Ler a nota de aula em Measurements And Units (JAMB)

Motion

Measurements And Units

Ver Resposta

Pergunta 22 Relatório

A force F is applied to a body P as shown in the diagram above. If the body moves through a distance, a, which of the following represents the work done?

Fa Cos θ Resposta correta

\(\frac{Fa}{\cos \theta}\)

FaSin θ

\(\frac{Fa}{\sin \theta}\)

Detalhes da Resposta

Ler a nota de aula em Scalars And Vectors (WAEC)

Ler a nota de aula em Work, Energy And Power (WAEC)

Scalars And Vectors

Work, Energy And Power

Ver Resposta

Pergunta 23 Relatório

Which to the following is NOT a fundamental unit?

Ampere

Kelvin

Kilogramme

Newton Resposta correta

Second

Detalhes da Resposta

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

Fundamental And Derived Quantities And Units

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Pergunta 24 Relatório

The general equation of a wave CANNOT be written as

y = A Sin [2 π (\(\frac{t}{T}\) ± Xλ)]

y = A Sin [wt ± kx]

y = A Sin [2 \(\frac{\pi}{\lambda}\) (vt ± x)]

y = A Sin [2π (ft ± \(\frac{X}{\lambda}\) )]

y = A Sin 2 π f(T ± \(\frac{X}{\lambda}\))] Resposta correta

Detalhes da Resposta

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

Production And Propagation Of Waves

Ver Resposta

Pergunta 25 Relatório

Calculate the energy stored in an inductor of inductance 0.5H when a current of 3A flows through it.

15.00 J

9.45 J

6.00 J

4.50J

2.25 J Resposta correta

Detalhes da Resposta

Ler a nota de aula em Capacitors (JAMB)

Ler a nota de aula em Work, Energy And Power (WAEC)

Capacitors

Work, Energy And Power

Ver Resposta

Pergunta 26 Relatório

A projectile fired with initial velocity, u will attain its maximum height H when the angle of projection θ is

30°

450°

60°

75°

90° Resposta correta

Detalhes da Resposta

Ler a nota de aula em Scalars And Vectors (JAMB)

Ler a nota de aula em Motion (JAMB)

Scalars And Vectors

Motion

Ver Resposta

Pergunta 27 Relatório

Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is

equal and opposite to F^B Resposta correta

equal to and in the same direction with F^B

greater than and in the same direction with F_B

greater than and opposite to F_B

less than and opposite to F_B

Detalhes da Resposta

Ler a nota de aula em Electric Field (WAEC)

Electric Field

Ver Resposta

Pergunta 28 Relatório

A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10ms-2]

1.00s

1.50s Resposta correta

2.25s

2.50s

3.00s

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

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

Motion

Equilibrium Of Forces

Ver Resposta

Pergunta 29 Relatório

Which property of a fluid determines its suitability as a lubricant?

Capillarity

Diffusion

Solubility

Surface tension

Viscosity Resposta correta

Detalhes da Resposta

Ler a nota de aula em Fluid At Rest (WAEC)

Fluid At Rest

Ver Resposta

Pergunta 30 Relatório

When very hot water is poured into a thin-walled glass container, it is less likely to break because

all parts of the container got heated-uniformly Resposta correta

glass can withstand a very high temperature

the molecules of glass are too far apart to cause breakages of the container

the outer part of the container is cooler than the inner part

thin glass does not expand fast

Detalhes da Resposta

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

Ler a nota de aula em Elasticity (JAMB)

Temperature And Its Measurement

Elasticity

Ver Resposta

Pergunta 31 Relatório

Which of the following statements is true of nuclear fission?

Heavy nuclei combine to form new element

Protons are used in bombarding heavy nucleus

The sum of the masses of the products is greater than the mass of the original substance

Two light nuclei are made to combine to form a heavy nucleus

Very large amount of energy is released. Resposta correta

Detalhes da Resposta

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

Ler a nota de aula em Position, Distance And Displacement (WAEC)

Structure Of The Nucleus

Position, Distance And Displacement

Ver Resposta

Pergunta 32 Relatório

A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?

9.766 × 10^-4

1.736 ×10^-3

1.953 ×10^-3 Resposta correta

3.472 × 10^-3

3.906 x 10^-3

Detalhes da Resposta

Ler a nota de aula em Elementary Modern Physics (JAMB)

Elementary Modern Physics

Ver Resposta

Pergunta 33 Relatório

A body of mass 40g loses 80J of heat energy. If the specific heat capacity of the body is 400 Jkg^-1, calculate the change in temperature of the body.

0.2K

0.4K

2.0K

5.0K Resposta correta

10.0K

Detalhes da Resposta

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

Quantity Of Heat

Ver Resposta

Pergunta 34 Relatório

Emission spectra are caused by

kinetic energy of moving atoms

potential energy of an electron in an atom

transition of an electron from a higher energy level to a lower energy level Resposta correta

transition of an electron from a lower energy level to higher energy level

transition of excited protons in the nucleus.

Detalhes da Resposta

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

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

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

Wave-particle Paradox

Structure Of The Nucleus

Structure Of The Atom (Nigeria Only)

Ver Resposta

Pergunta 35 Relatório

A plane which is Inclined at an angle of 30 ° to the horizontal has a velocity ratio of

2 Resposta correta

0.87

0.67

0.5

Detalhes da Resposta

Ler a nota de aula em Scalars And Vectors (JAMB)

Ler a nota de aula em Speed And Velocity (WAEC)

Scalars And Vectors

Speed And Velocity

Ver Resposta

Pergunta 36 Relatório

An electron makes a transition from - 1.60 eV energy level to - 10.4eV energy level Calculate the energy loss due to the transition.

16.64eV

12.00eV

10.40eV

8.80eV Resposta correta

6.50eV

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 37 Relatório

A resistor connected in parallel with a galvanometer so that a large amount of current can be measured is called a/an

ammeter

avometer

coil resistor

multiplier

shunt. Resposta correta

Detalhes da Resposta

Ler a nota de aula em Current Electricity (JAMB)

Current Electricity

Ver Resposta

Pergunta 38 Relatório

Calculate the wavelength of light travelling with a speed of 3 × 108ms^-1 and a frequency of 6.2 × 10¹⁴Hz.

4.8 × 10^-8m

4.8 × 10^-7m Resposta correta

4.8 × 10^-6m

4.8 × 10^-5m

4.8 × 10^-4m

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 39 Relatório

The temperature at which the water vapour present in the air is just enough to saturate the air is the _______ point.

boiling

critical

dew Resposta correta

ice

steam

Detalhes da Resposta

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

Temperature And Its Measurement

Ver Resposta

Pergunta 40 Relatório

Which of the following is NOT an example of a percussion instrument?

Bell

Drum

Flute Resposta correta

Gong

Xylophone

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

Motion

Ver Resposta

Pergunta 41 Relatório

What is the uncertainty in the measurement of time, if the uncertainty in measuring the energy of an electron of mass 10^-30 kg is 2.45 × 10^-19J? h = 6.6 × 10^-34

1.35 ×10^-15s

2.69 × 10^-15s Resposta correta

4.15 × 10^-15s

9.05 × 10^-15s

1.62 × 10^-14s

Detalhes da Resposta

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

Temperature And Its Measurement

Ver Resposta

Pergunta 42 Relatório

A car travels with a constant velocity of 45 kmh^-1 for 20s. What distance does it cover in this time?

0.025m

0.250m

2.500m

25.000m

250.000m Resposta correta

Detalhes da Resposta

Ler a nota de aula em Motion (JAMB)

Motion

Ver Resposta

Pergunta 43 Relatório

A mass of 5kg is suspended from the ceiling of a lift with a light inextensible string. As the lift moves upwards with an acceleration of 2ms^-2, the tension in the string is [g = 10ms^-2]

25N

40N Resposta correta

50N

60N

70N

Detalhes da Resposta

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

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

Newton’s Laws Of Motion

Equilibrium Of Forces

Ver Resposta

Pergunta 44 Relatório