NECO SSCE - Physics - 2009 (Objective)

Question 1 Report

In which of the following fields is repulsion NOT experienced?

Electrical only

Gravitational only

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 2 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

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 3 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

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 4 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

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 5 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°

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 6 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

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 7 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

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 8 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

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 9 Report

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

condensation

conduction

convection

evaporation

radiation

Answer Details

Read lesson note on Heat Transfer (JAMB)

Heat Transfer

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Question 10 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

nature of the material used

orientation of the magnetic material in space

size of the magnetic material

Answer Details

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Question 11 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

Answer Details

Read lesson note on Capacitors (JAMB)

Capacitors

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Question 12 Report

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

low boiling point

Low evaporating rate

high conductivity

high density

high viscosity

Answer Details

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Question 13 Report

Determine the value of x from the nuclear reaction below,

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

220

222

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 14 Report

A body accelerating will have a constant speed if it is

falling from a height

in equilibrium

moving in a circular path

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 15 Report

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

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

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 16 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

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

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

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

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

Answer Details

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Question 17 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°

29.5°

60.0°

63.4°

Answer Details

Read lesson note on Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Question 18 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

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 19 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

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 20 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

Answer Details

Read lesson note on Gravitational Field (JAMB)

Gravitational Field

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Question 21 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

200.0Hz

Answer Details

Read lesson note on Elementary Modern Physics (JAMB)

Elementary Modern Physics

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Question 22 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

3800.0 Nm^-1

Answer Details

Read lesson note on Elasticity (JAMB)

Elasticity

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Question 23 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

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 24 Report

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

conical

cubical

cylindrical

parabolic

spherical

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 25 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

112s

130s

168s

280s

Answer Details

Read lesson note on Heat Energy (WAEC)

Heat Energy

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Question 26 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

12.600km

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

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Question 27 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

2.00s

3.14s

6.28s

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Question 28 Report

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

30°

45°

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 29 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

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 30 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

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

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

Answer Details

Read lesson note on Simple Machines (JAMB)

Simple Machines

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Question 31 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

1914m

3828m

8700m

17400m

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 32 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

q ÷ 4πe_o²d

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 33 Report

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

Adhesion

Capillarity

Cohesion

Osmosis

Surface tension

Answer Details

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Question 34 Report

The term torque means

the equilibrant of two concurrent forces

the moment of a force about an ads

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 35 Report

The phenomenon of photoelectric effect is used in the following EXCEPT

automatic doors

bugler alarm

electric fire alarm

sound production from film tracks

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 36 Report

Which of the following substances undergoes sublimation?

Ether

Ice

Iodine

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 37 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)

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 38 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

Its molecules gain kinetic energy when heated

Its molecules move about randomly

Answer Details

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Question 39 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

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 40 Report

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

accelerate

be reluctant to move when at rest

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 41 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

Answer Details

Read lesson note on Heat Energy (WAEC)

Heat Energy

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Question 42 Report

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

Compton effect and thermionic emission