NECO SSCE - Physics - 2004 (Objective)

Question 1 Rapport

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 Bonne réponse

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

Détails de la réponse

Lisez la note de cours sur Electric Field (WAEC)

Electric Field

Voir la réponse

Question 2 Rapport

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 Bonne réponse

3.472 × 10^-3

3.906 x 10^-3

Détails de la réponse

Lisez la note de cours sur Elementary Modern Physics (JAMB)

Elementary Modern Physics

Voir la réponse

Question 3 Rapport

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 Bonne réponse

2.25s

2.50s

3.00s

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Lisez la note de cours sur Equilibrium Of Forces (WAEC)

Motion

Equilibrium Of Forces

Voir la réponse

Question 4 Rapport

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

damped

forced

free

natural Bonne réponse

sinusoidal

Détails de la réponse

Lisez la note de cours sur Simple Harmonic Motion (WAEC)

Lisez la note de cours sur Equilibrium Of Forces (WAEC)

Simple Harmonic Motion

Equilibrium Of Forces

Voir la réponse

Question 5 Rapport

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 Bonne réponse

544m

1088m

2000m

Détails de la réponse

Lisez la note de cours sur Sound Waves (WAEC)

Lisez la note de cours sur Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

Voir la réponse

Question 6 Rapport

In which of the following are crystalline structures observable?

I. Gas
II. Liquid
III. Solid

I only

II only

III only Bonne réponse

I and III only

II and III only

Détails de la réponse

Lisez la note de cours sur Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Voir la réponse

Question 7 Rapport

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 Bonne réponse

4.15 × 10^-15s

9.05 × 10^-15s

1.62 × 10^-14s

Détails de la réponse

Lisez la note de cours sur Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Voir la réponse

Question 8 Rapport

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

becomes zero

decreases

increases Bonne réponse

is halved

remains the same

Détails de la réponse

Lisez la note de cours sur Capacitors (JAMB)

Capacitors

Voir la réponse

Question 9 Rapport

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 Bonne réponse

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

FaSin θ

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

Détails de la réponse

Lisez la note de cours sur Scalars And Vectors (WAEC)

Lisez la note de cours sur Work, Energy And Power (WAEC)

Scalars And Vectors

Work, Energy And Power

Voir la réponse

Question 10 Rapport

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 Bonne réponse

1.8 × 108NC^-1

5.6 × 108NC^-1

3.6 × 108NC^-1

1.5 × 106NC^-1

Détails de la réponse

Lisez la note de cours sur Electric Field (WAEC)

Electric Field

Voir la réponse

Question 11 Rapport

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

Ammonium chloride

Copper (II) tetra Oxo sulphate (VI) solution Bonne réponse

Manganese (IV) oxide

Tetraoxo sulphate (VI) acid

Water

Détails de la réponse

Lisez la note de cours sur Current Electricity (JAMB)

Lisez la note de cours sur Electric Cells (JAMB)

Current Electricity

Electric Cells

Voir la réponse

Question 12 Rapport

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° Bonne réponse

60.0°

75.5°

105.0 °

Détails de la réponse

Lisez la note de cours sur Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

Voir la réponse

Question 13 Rapport

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. Bonne réponse

B has a greater speed than A

B is louder than A

A and B have the same quality

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Lisez la note de cours sur Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Motion

Properties Of Waves: Reflection, Refraction, Diffraction

Voir la réponse

Question 14 Rapport

Which to the following is NOT a fundamental unit?

Ampere

Kelvin

Kilogramme

Newton Bonne réponse

Second

Détails de la réponse

Lisez la note de cours sur Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

Voir la réponse

Question 15 Rapport

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 Bonne réponse

6.50eV

Détails de la réponse

Lisez la note de cours sur Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Voir la réponse

Question 16 Rapport

A voltage supply of 12V r.m.s. and frequency 90Hz is connected to a 4 ω resistor. Calculate the peak value of the current

48.8 A

30.0 A

27.5 A

4.2 A Bonne réponse

3.0A

Détails de la réponse

Voir la réponse

Question 17 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Motion

Voir la réponse

Question 18 Rapport

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

2 Bonne réponse

0.87

0.67

0.5

Détails de la réponse

Lisez la note de cours sur Scalars And Vectors (JAMB)

Lisez la note de cours sur Speed And Velocity (WAEC)

Scalars And Vectors

Speed And Velocity

Voir la réponse

Question 19 Rapport

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 ± \(\frac{X}{\lambda}\))] Bonne réponse

Détails de la réponse

Lisez la note de cours sur Production And Propagation Of Waves (WAEC)

Production And Propagation Of Waves

Voir la réponse

Question 20 Rapport

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. Bonne réponse

Détails de la réponse

Lisez la note de cours sur Current Electricity (JAMB)

Current Electricity

Voir la réponse

Question 21 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Sound Waves (WAEC)

Lisez la note de cours sur Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lisez la note de cours sur Light Waves (WAEC)

Sound Waves

Properties Of Waves: Reflection, Refraction, Diffraction

Light Waves

Voir la réponse

Question 22 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Capacitors (JAMB)

Lisez la note de cours sur Work, Energy And Power (WAEC)

Capacitors

Work, Energy And Power

Voir la réponse

Question 23 Rapport

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 Bonne réponse

I and II only

II and III only

I, II and III

Détails de la réponse

Lisez la note de cours sur Gas Laws (JAMB)

Gas Laws

Voir la réponse

Question 24 Rapport

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 Bonne réponse

directly proportional to the square of the resistances of the wires

inversely proportional to I

inversely proportional to the resistance of the wires

Détails de la réponse

Lisez la note de cours sur Electrostatics (JAMB)

Electrostatics

Voir la réponse

Question 25 Rapport

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

Capillarity

Diffusion

Solubility

Surface tension

Viscosity Bonne réponse

Détails de la réponse

Lisez la note de cours sur Fluid At Rest (WAEC)

Fluid At Rest

Voir la réponse

Question 26 Rapport

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 Bonne réponse

I, II and III only

II, III and IV only

I, II, III and IV

Détails de la réponse

Lisez la note de cours sur Heat Energy (WAEC)

Heat Energy

Voir la réponse

Question 27 Rapport

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 Bonne réponse

4.8 × 10^-6m

4.8 × 10^-5m

4.8 × 10^-4m

Détails de la réponse

Lisez la note de cours sur Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Voir la réponse

Question 28 Rapport

In which of these fields are repulsive forces NOT experienced?

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

I only

II only Bonne réponse

III only

I and III only

II and III only

Détails de la réponse

Lisez la note de cours sur Electric Field (WAEC)

Lisez la note de cours sur Gravitational Field (WAEC)

Electric Field

Gravitational Field

Voir la réponse

Question 29 Rapport

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

boiling

critical

dew Bonne réponse

ice

steam

Détails de la réponse

Lisez la note de cours sur Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Voir la réponse

Question 30 Rapport

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 Bonne réponse

50N

60N

70N

Détails de la réponse

Lisez la note de cours sur Newton’s Laws Of Motion (WAEC)

Lisez la note de cours sur Equilibrium Of Forces (WAEC)

Newton’s Laws Of Motion

Equilibrium Of Forces

Voir la réponse

Question 31 Rapport

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 Bonne réponse

II and III only.

Détails de la réponse

Lisez la note de cours sur Reflection Of Light At Plane And Curved Surfaces (JAMB)

Lisez la note de cours sur 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

Voir la réponse

Question 32 Rapport

The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a

barometer

hydrometer Bonne réponse

manometer

hypsometer

Détails de la réponse

Lisez la note de cours sur Measurements And Units (JAMB)

Measurements And Units

Voir la réponse

Question 33 Rapport

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 Bonne réponse

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

Détails de la réponse

Lisez la note de cours sur Temperature And Its Measurement (JAMB)

Lisez la note de cours sur Elasticity (JAMB)

Temperature And Its Measurement

Elasticity

Voir la réponse

Question 34 Rapport

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° Bonne réponse

Détails de la réponse

Lisez la note de cours sur Scalars And Vectors (JAMB)

Lisez la note de cours sur Motion (JAMB)

Scalars And Vectors

Motion

Voir la réponse

Question 35 Rapport

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 Bonne réponse

1.73s

1.78s

5.11s

Détails de la réponse

Lisez la note de cours sur Simple Harmonic Motion (WAEC)

Lisez la note de cours sur Work, Energy And Power (WAEC)

Simple Harmonic Motion

Work, Energy And Power

Voir la réponse

Question 36 Rapport

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. Bonne réponse

Détails de la réponse

Lisez la note de cours sur Structure Of The Nucleus (WAEC)

Lisez la note de cours sur Position, Distance And Displacement (WAEC)

Structure Of The Nucleus

Position, Distance And Displacement

Voir la réponse

Question 37 Rapport

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 Bonne réponse

0.03kg

0.04kg

0.05kg

0.06kg

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Lisez la note de cours sur Measurements And Units (JAMB)

Motion

Measurements And Units

Voir la réponse

Question 38 Rapport

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 Bonne réponse

10.0K

Détails de la réponse

Lisez la note de cours sur Quantity Of Heat (JAMB)

Quantity Of Heat

Voir la réponse

Question 39 Rapport

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 Bonne réponse

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

transition of excited protons in the nucleus.

Détails de la réponse

Lisez la note de cours sur Wave-particle Paradox (WAEC)

Lisez la note de cours sur Structure Of The Nucleus (WAEC)

Lisez la note de cours sur Structure Of The Atom (Nigeria Only) (WAEC)

Wave-particle Paradox

Structure Of The Nucleus

Structure Of The Atom (Nigeria Only)

Voir la réponse

Question 40 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Capacitors (JAMB)

Lisez la note de cours sur Simple A.C Circuits (JAMB)

Capacitors

Simple A.C Circuits

Voir la réponse

Question 41 Rapport

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 Bonne réponse

its effective value in the opposite direction

Détails de la réponse

Lisez la note de cours sur Scalars And Vectors (WAEC)

Lisez la note de cours sur Scalars And Vectors (JAMB)

Scalars And Vectors

Voir la réponse

Question 42 Rapport

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

Bell

Drum

Flute Bonne réponse

Gong

Xylophone

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Motion

Voir la réponse

Question 43 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Newton’s Laws Of Motion (WAEC)

Newton’s Laws Of Motion

Voir la réponse

Question 44 Rapport

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

0°

45°

60°

90°

180° Bonne réponse

Détails de la réponse

Lisez la note de cours sur Scalars And Vectors (JAMB)

Lisez la note de cours sur Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

Voir la réponse

Question 45 Rapport

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 Bonne réponse

II, III and IV only

Détails de la réponse

Lisez la note de cours sur Optical Instruments (JAMB)

Optical Instruments

Voir la réponse






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