NECO SSCE - Physics - 2009 (Objective)

Question 1 Rapport

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 Bonne réponse

3800.0 Nm^-1

Détails de la réponse

Lisez la note de cours sur Elasticity (JAMB)

Elasticity

Voir la réponse

Question 2 Rapport

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

conical

cubical

cylindrical Bonne réponse

parabolic

spherical

Détails de la réponse

Lisez la note de cours sur Electrostatics (JAMB)

Electrostatics

Voir la réponse

Question 3 Rapport

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

x = 0, y = 1 and z = -1 Bonne réponse

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

Détails de la réponse

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

Temperature And Its Measurement

Voir la réponse

Question 4 Rapport

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 Bonne réponse

25.60A

27.68A

Détails de la réponse

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

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

Simple A.C. Circuits

Elementary Modern Physics

Voir la réponse

Question 5 Rapport

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 Bonne réponse

1.7s

2.0s

3.4s

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Motion

Voir la réponse

Question 6 Rapport

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° Bonne réponse

29.5°

60.0°

63.4°

Détails de la réponse

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

Equilibrium Of Forces

Voir la réponse

Question 7 Rapport

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 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 8 Rapport

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 Bonne réponse

Violin and organ

Détails de la réponse

Lisez la note de cours sur Current Electricity (JAMB)

Lisez la note de cours sur Sound Waves (WAEC)

Current Electricity

Sound Waves

Voir la réponse

Question 9 Rapport

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 Bonne réponse

Water boils at a definite temperature

Water evaporates at all temperatures

Water has its maximum density at 4°C

Détails de la réponse

Lisez la note de cours sur Change Of State (JAMB)

Change Of State

Voir la réponse

Question 10 Rapport

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 Bonne réponse

100N

125N

225N

250N

Détails de la réponse

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

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

Newton’s Laws Of Motion

Work, Energy And Power

Voir la réponse

Question 11 Rapport

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 Bonne réponse

20J

100J

1000J

2000J

Détails de la réponse

Lisez la note de cours sur Energy (WAEC)

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

Energy

Work, Energy And Power

Voir la réponse

Question 12 Rapport

In which of the following fields is repulsion NOT experienced?

Electrical only

Gravitational only Bonne réponse

Magnetic only

Magnetic and electrical

Magnetic and gravitational

Détails de la réponse

Lisez la note de cours sur Electric Field (WAEC)

Lisez la note de cours sur Gravitational Field (JAMB)

Electric Field

Gravitational Field

Voir la réponse

Question 13 Rapport

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° 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 14 Rapport

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 Bonne réponse

Y is inverted while X is erect

Y is real while X is virtual.

Détails de la réponse

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

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

Simple A.C. Circuits

Reflection Of Light At Plane And Curved Surfaces

Voir la réponse

Question 15 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Gravitational Field (JAMB)

Gravitational Field

Voir la réponse

Question 16 Rapport

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

low boiling point Bonne réponse

Low evaporating rate

high conductivity

high density

high viscosity

Détails de la réponse

Voir la réponse

Question 17 Rapport

The term torque means

the equilibrant of two concurrent forces

the moment of a force about an ads Bonne réponse

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

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 18 Rapport

The phenomenon of photoelectric effect is used in the following EXCEPT

automatic doors

bugler alarm

electric fire alarm

sound production from film tracks Bonne réponse

television cameras

Détails de la réponse

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

Lisez la note de cours sur Electromagnetic Field (Part 2) (WAEC)

Structure Of The Atom (Nigeria Only)

Electromagnetic Field (Part 2)

Voir la réponse

Question 19 Rapport

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 Bonne réponse

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

Détails de la réponse

Lisez la note de cours sur Pressure (JAMB)

Lisez la note de cours sur Liquids At Rest (JAMB)

Pressure

Liquids At Rest

Voir la réponse

Question 20 Rapport

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 Bonne réponse

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 21 Rapport

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 Bonne réponse

200.0Hz

Détails de la réponse

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

Elementary Modern Physics

Voir la réponse

Question 22 Rapport

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

30°

45° Bonne réponse

60°

75°

90°

Détails de la réponse

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

Lisez la note de cours sur Motion (JAMB)

Scalars And Vectors

Motion

Voir la réponse

Question 23 Rapport

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

Adhesion

Capillarity

Cohesion

Osmosis

Surface tension Bonne réponse

Détails de la réponse

Voir la réponse

Question 24 Rapport

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

\(\frac{w}{p}\) Bonne réponse

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

Détails de la réponse

Lisez la note de cours sur Simple Machines (JAMB)

Simple Machines

Voir la réponse

Question 25 Rapport

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 Bonne réponse

2.00s

3.14s

6.28s

Détails de la réponse

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

Simple Harmonic Motion

Voir la réponse

Question 26 Rapport

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

\(\frac{R}{4}\) Bonne réponse

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

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

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

Détails de la réponse

Voir la réponse

Question 27 Rapport

Which of the following substances undergoes sublimation?

Ether

Ice

Iodine Bonne réponse

Naphthalene

Turpentine

Détails de la réponse

Lisez la note de cours sur Change Of State (JAMB)

Lisez la note de cours sur Vapours (JAMB)

Change Of State

Vapours

Voir la réponse

Question 28 Rapport

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

amount of current passed

direction of the current Bonne réponse

nature of the material used

orientation of the magnetic material in space

size of the magnetic material

Détails de la réponse

Voir la réponse

Question 29 Rapport

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

astigmatism

hypermetropia

myopia

presbyopia Bonne réponse

spherical aberration

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 30 Rapport

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 Bonne réponse

1914m

3828m

8700m

17400m

Détails de la réponse

Lisez la note de cours sur Motion (JAMB)

Motion

Voir la réponse

Question 31 Rapport

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

accelerate

be reluctant to move when at rest Bonne réponse

experience friction when moving

move randomly

retard

Détails de la réponse

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

Lisez la note de cours sur Motion (JAMB)

Newton’s Laws Of Motion

Motion

Voir la réponse

Question 32 Rapport

Determine the value of x from the nuclear reaction below,

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

220

222 Bonne réponse

224

226

228

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 33 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Description Property Of Fields (WAEC)

Lisez la note de cours sur Sound Waves (WAEC)

Description Property Of Fields

Sound Waves

Voir la réponse

Question 34 Rapport

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 Bonne réponse

Interference and polarization

Reflection and photoelectric effect

Détails de la réponse

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

Wave-particle Paradox

Voir la réponse

Question 35 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Capacitors (JAMB)

Capacitors

Voir la réponse

Question 36 Rapport

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 Bonne réponse

2.5

12.5

100

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 37 Rapport

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

It has no definite shape

It is compressible

Its molecules are closely packed Bonne réponse

Its molecules gain kinetic energy when heated

Its molecules move about randomly

Détails de la réponse

Voir la réponse

Question 38 Rapport

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 Bonne réponse

q ÷ 4πe_o²d

Détails de la réponse

Lisez la note de cours sur Electrostatics (JAMB)

Electrostatics

Voir la réponse

Question 39 Rapport

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 Bonne réponse

Voltaic cell

Wet Leclanche cell

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 40 Rapport

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 Bonne réponse

112s

130s

168s

280s

Détails de la réponse

Lisez la note de cours sur Heat Energy (WAEC)

Heat Energy

Voir la réponse

Question 41 Rapport

A series RLC circuit is said to resonate, when

capacitive reactance is zero

conductance is maximum

current is minimum

impedance is minimum Bonne réponse

inductive reactance is zero

Détails de la réponse

Lisez la note de cours sur Capacitors (JAMB)

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

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

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

Lisez la note de cours sur Introductory Electronics (JAMB)

Capacitors

Scalars And Vectors

Properties Of Waves: Reflection, Refraction, Diffraction

Simple A.C Circuits

Introductory Electronics

Voir la réponse

Question 42 Rapport

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 Bonne réponse

12.600km

Détails de la réponse

Lisez la note de cours sur Current Electricity (JAMB)

Current Electricity

Voir la réponse

Question 43 Rapport

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 Bonne réponse

Détails de la réponse

Lisez la note de cours sur Heat Energy (WAEC)

Heat Energy

Voir la réponse

Question 44 Rapport

A body accelerating will have a constant speed if it is

falling from a height