NECO SSCE - Physics - 2004 (Objective)

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 Correct answer

50N

60N

70N

Answer Details

Read lesson note on Newton’s Laws Of Motion (WAEC)

Read lesson note on Equilibrium Of Forces (WAEC)

Newton’s Laws Of Motion

Equilibrium Of Forces

View Answer

Question 4 Report

Which to the following is NOT a fundamental unit?

Ampere

Kelvin

Kilogramme

Newton Correct answer

Second

Answer Details

Read lesson note on Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

View Answer

Question 5 Report

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 Correct answer

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Work, Energy And Power (WAEC)

Capacitors

Work, Energy And Power

View Answer

Question 6 Report

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

Capillarity

Diffusion

Solubility

Surface tension

Viscosity Correct answer

Answer Details

Read lesson note on Fluid At Rest (WAEC)

Fluid At Rest

View Answer

Question 7 Report

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 Correct answer

I, II and III only

II, III and IV only

I, II, III and IV

Answer Details

Read lesson note on Heat Energy (WAEC)

Heat Energy

View Answer

Question 8 Report

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. Correct answer

B has a greater speed than A

B is louder than A

A and B have the same quality

Answer Details

Read lesson note on Motion (JAMB)

Read lesson note on Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Motion

Properties Of Waves: Reflection, Refraction, Diffraction

View Answer

Question 9 Report

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 Correct answer

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

transition of excited protons in the nucleus.

Answer Details

Read lesson note on Wave-particle Paradox (WAEC)

Read lesson note on Structure Of The Nucleus (WAEC)

Read lesson note on Structure Of The Atom (Nigeria Only) (WAEC)

Wave-particle Paradox

Structure Of The Nucleus

Structure Of The Atom (Nigeria Only)

View Answer

Question 10 Report

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

becomes zero

decreases

increases Correct answer

is halved

remains the same

Answer Details

Read lesson note on Capacitors (JAMB)

Capacitors

View Answer

Question 11 Report

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 Correct answer

3.472 × 10^-3

3.906 x 10^-3

Answer Details

Read lesson note on Elementary Modern Physics (JAMB)

Elementary Modern Physics

View Answer

Question 12 Report

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 Correct answer

4.15 × 10^-15s

9.05 × 10^-15s

1.62 × 10^-14s

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

View Answer

Question 13 Report

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 Correct answer

directly proportional to the square of the resistances of the wires

inversely proportional to I

inversely proportional to the resistance of the wires

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

View Answer

Question 14 Report

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

boiling

critical

dew Correct answer

ice

steam

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

View Answer

Question 15 Report

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 Correct answer

1.8 × 108NC^-1

5.6 × 108NC^-1

3.6 × 108NC^-1

1.5 × 106NC^-1

Answer Details

Read lesson note on Electric Field (WAEC)

Electric Field

View Answer

Question 16 Report

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° Correct answer

60.0°

75.5°

105.0 °

Answer Details

Read lesson note on Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

View Answer

Question 17 Report

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 Correct answer

its effective value in the opposite direction

Answer Details

Read lesson note on Scalars And Vectors (WAEC)

Read lesson note on Scalars And Vectors (JAMB)

Scalars And Vectors

View Answer

Question 18 Report

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

2 Correct answer

0.87

0.67

0.5

Answer Details

Read lesson note on Scalars And Vectors (JAMB)

Read lesson note on Speed And Velocity (WAEC)

Scalars And Vectors

Speed And Velocity

View Answer

Question 19 Report

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 Correct answer

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

FaSin θ

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

Answer Details

Read lesson note on Scalars And Vectors (WAEC)

Read lesson note on Work, Energy And Power (WAEC)

Scalars And Vectors

Work, Energy And Power

View Answer

Question 20 Report

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 Correct answer

3.0A

Answer Details

View Answer

Question 21 Report

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 Correct answer

Answer Details

Read lesson note on Sound Waves (WAEC)

Read lesson note on Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Read lesson note on Light Waves (WAEC)

Sound Waves

Properties Of Waves: Reflection, Refraction, Diffraction

Light Waves

View Answer

Question 22 Report

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

0°

45°

60°

90°

180° Correct answer

Answer Details

Read lesson note on Scalars And Vectors (JAMB)

Read lesson note on Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

View Answer

Question 23 Report

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 Correct answer

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Simple A.C Circuits (JAMB)

Capacitors

Simple A.C Circuits

View Answer

Question 24 Report

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 Correct answer

0.03kg

0.04kg

0.05kg

0.06kg

Answer Details

Read lesson note on Motion (JAMB)

Read lesson note on Measurements And Units (JAMB)

Motion

Measurements And Units

View Answer

Question 25 Report

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 Correct answer

I and II only

II and III only

I, II and III

Answer Details

Read lesson note on Gas Laws (JAMB)

Gas Laws

View Answer

Question 26 Report

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 Correct answer

2.25s

2.50s

3.00s

Answer Details

Read lesson note on Motion (JAMB)

Read lesson note on Equilibrium Of Forces (WAEC)

Motion

Equilibrium Of Forces

View Answer

Question 27 Report

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 Correct answer

4.8 × 10^-6m

4.8 × 10^-5m

4.8 × 10^-4m

Answer Details

Read lesson note on Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

View Answer

Question 28 Report

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 Correct answer

544m

1088m

2000m

Answer Details

Read lesson note on Sound Waves (WAEC)

Read lesson note on Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

View Answer

Question 29 Report

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 Correct answer

1.73s

1.78s

5.11s

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Read lesson note on Work, Energy And Power (WAEC)

Simple Harmonic Motion

Work, Energy And Power

View Answer

Question 30 Report

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 Correct answer

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

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Read lesson note on Elasticity (JAMB)

Temperature And Its Measurement

Elasticity

View Answer

Question 31 Report

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 Correct answer

II, III and IV only

Answer Details

Read lesson note on Optical Instruments (JAMB)

Optical Instruments

View Answer

Question 32 Report

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 Correct answer

6.50eV

Answer Details

Read lesson note on Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

View Answer

Question 33 Report

In which of these fields are repulsive forces NOT experienced?

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

I only

II only Correct answer

III only

I and III only

II and III only

Answer Details

Read lesson note on Electric Field (WAEC)

Read lesson note on Gravitational Field (WAEC)

Electric Field

Gravitational Field

View Answer

Question 34 Report

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. Correct answer

Answer Details

Read lesson note on Structure Of The Nucleus (WAEC)

Read lesson note on Position, Distance And Displacement (WAEC)

Structure Of The Nucleus

Position, Distance And Displacement

View Answer

Question 35 Report

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 Correct answer

Answer Details

Read lesson note on Motion (JAMB)

Motion

View Answer

Question 36 Report

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 Correct answer

II and III only.

Answer Details

Read lesson note on Reflection Of Light At Plane And Curved Surfaces (JAMB)

Read lesson note on 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

View Answer

Question 37 Report

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 ± \(\frac{X}{\lambda}\))] Correct answer

Answer Details

Read lesson note on Production And Propagation Of Waves (WAEC)

Production And Propagation Of Waves

View Answer

Question 38 Report

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. Correct answer

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

View Answer

Question 39 Report

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

Bell

Drum

Flute Correct answer

Gong

Xylophone

Answer Details

Read lesson note on Motion (JAMB)

Motion

View Answer

Question 40 Report

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 Correct answer

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

Answer Details

Read lesson note on Electric Field (WAEC)

Electric Field

View Answer

Question 41 Report

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

barometer

hydrometer Correct answer

manometer

hypsometer

Answer Details

Read lesson note on Measurements And Units (JAMB)

Measurements And Units

View Answer

Question 42 Report

In which of the following are crystalline structures observable?

I. Gas
II. Liquid
III. Solid

I only

II only

III only Correct answer

I and III only

II and III only

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

View Answer

Question 43 Report

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

damped

forced

free

natural Correct answer

sinusoidal

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Read lesson note on Equilibrium Of Forces (WAEC)

Simple Harmonic Motion

Equilibrium Of Forces

View Answer

Question 44 Report

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 Correct answer

Answer Details

Read lesson note on Newton’s Laws Of Motion (WAEC)

Newton’s Laws Of Motion

View Answer

Question 45 Report

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 Correct answer

10.0K

Answer Details

Read lesson note on Quantity Of Heat (JAMB)

Quantity Of Heat

View Answer






Press & Hold to Drag Around
Click Here to Close