NECO SSCE - Physics - 2009 (Objective)

Question 1 Report

Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then

A and B are equal

A is greater than B

the angle between A and B is 0°

the angle between A and B is 90°

the angle between A and B is 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

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Question 2 Report

Which of the following statements is correct about volatile liquids? They have

low boiling point Correct answer

Low evaporating rate

high conductivity

high density

high viscosity

Answer Details

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Question 3 Report

An immersion heater is rated 1500W. How long does it take the heater to raise the temperature of 1 kg of water by 30°C? (Assume heat lost to the surrounding is negligible, Specific heat capacity of water 4200Jkg^-1K^-1)

84s Correct answer

112s

130s

168s

280s

Answer Details

Read lesson note on Heat Energy (WAEC)

Heat Energy

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Question 4 Report

Which of the following substances undergoes sublimation?

Ether

Ice

Iodine Correct answer

Naphthalene

Turpentine

Answer Details

Read lesson note on Change Of State (JAMB)

Read lesson note on Vapours (JAMB)

Change Of State

Vapours

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Question 5 Report

Two forces of magnitude 8N and 4N act at right angle to each other. The angle between the resultant and the 8N force is

23.9°

26.6° Correct answer

29.5°

60.0°

63.4°

Answer Details

Read lesson note on Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Question 6 Report

Which of the following statements about a gas is NOT correct?

It has no definite shape

It is compressible

Its molecules are closely packed Correct answer

Its molecules gain kinetic energy when heated

Its molecules move about randomly

Answer Details

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Question 7 Report

Which of the following phenomena is responsible for the spherical shape of soap bubbles?

Adhesion

Capillarity

Cohesion

Osmosis

Surface tension Correct answer

Answer Details

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Question 8 Report

Arrange the following in the order of their increasing frequency.

I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation

I, II, III, IV, V

II, III, IV, V, I

III, IV, V, I, II

IV, III, I. V, II

III, IV, I,V, II Correct answer

Answer Details

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

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

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Question 9 Report

Which of the following statements about water is NOT correct?

Pure water freezes at 0°C under normal pressure

The volume of a given mass of water at 0° is less than its volume at 4°C Correct answer

Water boils at a definite temperature

Water evaporates at all temperatures

Water has its maximum density at 4°C

Answer Details

Read lesson note on Change Of State (JAMB)

Change Of State

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Question 10 Report

Inertia is the property of a body which makes the body to

accelerate

be reluctant to move when at rest Correct answer

experience friction when moving

move randomly

retard

Answer Details

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

Read lesson note on Motion (JAMB)

Newton’s Laws Of Motion

Motion

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Question 11 Report

Which of the following pairs of musical instruments produce sound due to the vibration of air column?

Bell and piano

Guitar and flute

Trumpet and drum

Trumpet and flute Correct answer

Violin and organ

Answer Details

Read lesson note on Current Electricity (JAMB)

Read lesson note on Sound Waves (WAEC)

Current Electricity

Sound Waves

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Question 12 Report

Which of the following statements is correct about light and sound waves? Both

are longitudinal waves

are transverse waves

have the same velocity in air

need a medium for propagation

transmit energy Correct answer

Answer Details

Read lesson note on Description Property Of Fields (WAEC)

Read lesson note on Sound Waves (WAEC)

Description Property Of Fields

Sound Waves

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Question 13 Report

The defect of the eye lens which occurs as a result of weak ciliary muscles is called

astigmatism

hypermetropia

myopia

presbyopia Correct answer

spherical aberration

Answer Details

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

Structure Of The Atom (Nigeria Only)

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Question 14 Report

An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms^-1]

957m Correct answer

1914m

3828m

8700m

17400m

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 15 Report

The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by

condensation

conduction

convection Correct answer

evaporation

radiation

Answer Details

Read lesson note on Heat Transfer (JAMB)

Heat Transfer

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Question 16 Report

A ball of mass 0.1kg moving with velocity of 20ms-1 is hit by a force which acts on it for 0.02s. If the ball moves off in the opposite direction with a velocity of 25ms-1 , calculate the magnitude of the force.

25N Correct answer

100N

125N

225N

250N

Answer Details

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

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

Newton’s Laws Of Motion

Work, Energy And Power

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Question 17 Report

A plane progressive wave is represented by the equation y = 0.2sin (200πt - 0.5.x) where x and y are measured in cm and t in s. What is the frequency of the wave?

0.5Hz

4.0Hz

10.0Hz

100.0Hz Correct answer

200.0Hz

Answer Details

Read lesson note on Elementary Modern Physics (JAMB)

Elementary Modern Physics

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Question 18 Report

In which of the following fields is repulsion NOT experienced?

Electrical only

Gravitational only Correct answer

Magnetic only

Magnetic and electrical

Magnetic and gravitational

Answer Details

Read lesson note on Electric Field (WAEC)

Read lesson note on Gravitational Field (JAMB)

Electric Field

Gravitational Field

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Question 19 Report

The phenomenon of photoelectric effect is used in the following EXCEPT

automatic doors

bugler alarm

electric fire alarm

sound production from film tracks Correct answer

television cameras

Answer Details

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

Read lesson note on Electromagnetic Field (Part 2) (WAEC)

Structure Of The Atom (Nigeria Only)

Electromagnetic Field (Part 2)

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Question 20 Report

A body accelerating will have a constant speed if it is

falling from a height

in equilibrium

moving in a circular path Correct answer

moving in a straight line

oscillating

Answer Details

Read lesson note on Scalars And Vectors (WAEC)

Read lesson note on Rectilinear Acceleration (WAEC)

Scalars And Vectors

Rectilinear Acceleration

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Question 21 Report

The equation P^xV^yT^z = Constant is Charles’ law if

x = 0, y = 1 and z = -1 Correct answer

x = 0, y = -1 and z = 1

x = 1, y = 1 and z = 0

x = 1, y = 1 and z = -1

x = 1, y = 1 and z = 1

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Question 22 Report

Two images Y and X are formed by a plane mirror and a convex mirror respectively. Which of the following is correct about their characteristics?

Both are inverted

The magnification of Y is greater than one while that of X is one

The magnification of Y is one while that of X is less than one Correct answer

Y is inverted while X is erect

Y is real while X is virtual.

Answer Details

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

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

Simple A.C. Circuits

Reflection Of Light At Plane And Curved Surfaces

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Question 23 Report

Determine the value of x from the nuclear reaction below,

\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy

220

222 Correct answer

224

226

228

Answer Details

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

Structure Of The Atom (Nigeria Only)

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Question 24 Report

An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as

W + P

P - W

\(\frac{w}{p}\) Correct answer

\(\frac{p}{w}\)

Answer Details

Read lesson note on Simple Machines (JAMB)

Simple Machines

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Question 25 Report

The term torque means

the equilibrant of two concurrent forces

the moment of a force about an ads Correct answer

the resultant of several forces acting on a body in equilibrium

two coplanar forces at right angle to each other

two equal and opposite forces whose lines of action do not coincide

Answer Details

Read lesson note on Scalars And Vectors (JAMB)

Read lesson note on Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

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Question 26 Report

A series RLC circuit is said to resonate, when

capacitive reactance is zero

conductance is maximum

current is minimum

impedance is minimum Correct answer

inductive reactance is zero

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Scalars And Vectors (JAMB)

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

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

Read lesson note on Introductory Electronics (JAMB)

Capacitors

Scalars And Vectors

Properties Of Waves: Reflection, Refraction, Diffraction

Simple A.C Circuits

Introductory Electronics

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Question 27 Report

Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1]

840J

3360J

3420J

4200J

7560J Correct answer

Answer Details

Read lesson note on Heat Energy (WAEC)

Heat Energy

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Question 28 Report

Which of the following cells does not require a dipolar for effective and efficient delivery of current?

Daniel cell

Dry Leclanche cell

Nickel-iron accumulator Correct answer

Voltaic cell

Wet Leclanche cell

Answer Details

Read lesson note on Current Electricity (JAMB)

Read lesson note on Electric Cells (JAMB)

Current Electricity

Electric Cells

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Question 29 Report

Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is

conical

cubical

cylindrical Correct answer

parabolic

spherical

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 30 Report

Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane?

Random and rotational

Rotational and oscillatory

Rotational only

Translations only

Translational and rotational Correct answer

Answer Details

Read lesson note on Scalars And Vectors (JAMB)

Read lesson note on Motion (JAMB)

Scalars And Vectors

Motion

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Question 31 Report

Which of the following statements about the pressure in a liquid is NOT correct? It

acts in all direction

changes with the material of the container Correct answer

is the same at all points in the same horizontal plane

varies with the density of the liquid

varies with the depth of the liquid

Answer Details

Read lesson note on Pressure (JAMB)

Read lesson note on Liquids At Rest (JAMB)

Pressure

Liquids At Rest

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Question 32 Report

A stone is thrown with a speed of 10ms at an angle of 30° to the horizontal, Calculate its time of flight, (g = 10ms²)

0.5s

1.0s Correct answer

1.7s

2.0s

3.4s

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 33 Report

The work done in extending a spring by 40 mm is 1.52J. Calculate the elastic constant of the spring.

38.8 Nm^-1

60.8 Nm^-1

190.0 Nm^-1

1900.0 Nm^-1 Correct answer

3800.0 Nm^-1

Answer Details

Read lesson note on Elasticity (JAMB)

Elasticity

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Question 34 Report

The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?

1.92N

2.88N

6.72N

8.00N

12.00N Correct answer

Answer Details

Read lesson note on Gravitational Field (JAMB)

Gravitational Field

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Question 35 Report

In the electrical method of making a magnet, the polar the magnet formed depends on the

amount of current passed

direction of the current Correct answer

nature of the material used

orientation of the magnetic material in space

size of the magnetic material

Answer Details

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Question 36 Report

A projectile attains its maximum height when the angle of projection is

30°

45° Correct answer

60°

75°

90°

Answer Details

Read lesson note on Scalars And Vectors (WAEC)

Read lesson note on Motion (JAMB)

Scalars And Vectors

Motion

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Question 37 Report

A transformer has an efficiency of 92.5%. the ratio number of turns in the primary coil to that in the secondary coil is 128 : 45. If the current passing through the secondary coil is 9.0A, calculate the current passing through the primary-coil.

2.93A

3.16A

3.42A Correct answer

25.60A

27.68A

Answer Details

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

Read lesson note on Elementary Modern Physics (JAMB)

Simple A.C. Circuits

Elementary Modern Physics

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Question 38 Report

Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V.

0.02 J

0.10 J

0.20 J

1.00 J

10.00 J Correct answer

Answer Details

Read lesson note on Capacitors (JAMB)

Capacitors

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Question 39 Report

An object of mass 2kg moves for 5s with a uniform velocity of 10ms. What is the magnitude of its acceleration in ms^-2?

zero Correct answer

2.5

12.5

100

Answer Details

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

Newton’s Laws Of Motion

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Question 40 Report

Which of the following pairs of phenomena helps in the resolution of the wave-particle paradox of matter?

Compton effect and thermionic emission

Electron diffraction and refraction

emission and absorption of light Correct answer

Interference and polarization

Reflection and photoelectric effect

Answer Details

Read lesson note on Wave-particle Paradox (WAEC)

Wave-particle Paradox

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Question 41 Report

A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14).

0.05s

1.00s Correct answer

2.00s

3.14s

6.28s

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Question 42 Report

A sound wave from a ship is received 8.4s later. What is the depth of the sea? [Speed of sound in water 1500ms^-1]

0.179km

0.357km

3.150km

6.300km Correct answer

12.600km

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

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Question 43 Report

A ball of mass 100g falls from a height of 5m onto a concrete floor and rebounds to a height of 3m. Calculate the energy lost. (g = 10ms^-2)

2J Correct answer

20J

100J

1000J

2000J

Answer Details

Read lesson note on Energy (WAEC)

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

Energy

Work, Energy And Power

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Question 44 Report

The electric potential at a distance d from a point charge q in air of permittivity eo is expressed as?

q² ÷ 4πe_od

q² ÷ 4πe_o

q ÷ 4πe_od²

q ÷ 4πe_od Correct answer

q ÷ 4πe_o²d

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 45 Report

When a resistor of resistance R is connected across a.c. the terminal p.d. of the cell is reduced to three-quart its e.m.f. The cell’s internal resistance in terms of R is

\(\frac{R}{4}\) Correct answer

\(\frac{R}{3}\)

\(\frac{R}{2}\)

2\(\frac{R}{3}\)

Answer Details

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