NECO SSCE - Physics - 2009 (Objective)

Vraag 1 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Capacitors (JAMB)

Capacitors

Bekijk antwoord

Vraag 2 Verslag

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

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

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

Antwoorddetails

Lees lesnotitie op Simple Machines (JAMB)

Simple Machines

Bekijk antwoord

Vraag 3 Verslag

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

conical

cubical

cylindrical Juist antwoord

parabolic

spherical

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 4 Verslag

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 Juist antwoord

100N

125N

225N

250N

Antwoorddetails

Lees lesnotitie op Newton’s Laws Of Motion (WAEC)

Lees lesnotitie op Work, Energy And Power (WAEC)

Newton’s Laws Of Motion

Work, Energy And Power

Bekijk antwoord

Vraag 5 Verslag

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 Juist antwoord

Violin and organ

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Sound Waves (WAEC)

Current Electricity

Sound Waves

Bekijk antwoord

Vraag 6 Verslag

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 Juist antwoord

112s

130s

168s

280s

Antwoorddetails

Lees lesnotitie op Heat Energy (WAEC)

Heat Energy

Bekijk antwoord

Vraag 7 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Bekijk antwoord

Vraag 8 Verslag

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° Juist antwoord

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (JAMB)

Lees lesnotitie op Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

Bekijk antwoord

Vraag 9 Verslag

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 Juist antwoord

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

Antwoorddetails

Lees lesnotitie op Pressure (JAMB)

Lees lesnotitie op Liquids At Rest (JAMB)

Pressure

Liquids At Rest

Bekijk antwoord

Vraag 10 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Gravitational Field (JAMB)

Gravitational Field

Bekijk antwoord

Vraag 11 Verslag

The phenomenon of photoelectric effect is used in the following EXCEPT

automatic doors

bugler alarm

electric fire alarm

sound production from film tracks Juist antwoord

television cameras

Antwoorddetails

Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Lees lesnotitie op Electromagnetic Field (Part 2) (WAEC)

Structure Of The Atom (Nigeria Only)

Electromagnetic Field (Part 2)

Bekijk antwoord

Vraag 12 Verslag

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 Juist antwoord

200.0Hz

Antwoorddetails

Lees lesnotitie op Elementary Modern Physics (JAMB)

Elementary Modern Physics

Bekijk antwoord

Vraag 13 Verslag

Which of the following substances undergoes sublimation?

Ether

Ice

Iodine Juist antwoord

Naphthalene

Turpentine

Antwoorddetails

Lees lesnotitie op Change Of State (JAMB)

Lees lesnotitie op Vapours (JAMB)

Change Of State

Vapours

Bekijk antwoord

Vraag 14 Verslag

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

low boiling point Juist antwoord

Low evaporating rate

high conductivity

high density

high viscosity

Antwoorddetails

Bekijk antwoord

Vraag 15 Verslag

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

30°

45° Juist antwoord

60°

75°

90°

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (WAEC)

Lees lesnotitie op Motion (JAMB)

Scalars And Vectors

Motion

Bekijk antwoord

Vraag 16 Verslag

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

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

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

Antwoorddetails

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Bekijk antwoord

Vraag 17 Verslag

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 Juist antwoord

2.5

12.5

100

Antwoorddetails

Lees lesnotitie op Newton’s Laws Of Motion (WAEC)

Newton’s Laws Of Motion

Bekijk antwoord

Vraag 18 Verslag

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

condensation

conduction

convection Juist antwoord

evaporation

radiation

Antwoorddetails

Lees lesnotitie op Heat Transfer (JAMB)

Heat Transfer

Bekijk antwoord

Vraag 19 Verslag

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

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

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

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

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

Antwoorddetails

Bekijk antwoord

Vraag 20 Verslag

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 Juist antwoord

20J

100J

1000J

2000J

Antwoorddetails

Lees lesnotitie op Energy (WAEC)

Lees lesnotitie op Work, Energy And Power (WAEC)

Energy

Work, Energy And Power

Bekijk antwoord

Vraag 21 Verslag

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

accelerate

be reluctant to move when at rest Juist antwoord

experience friction when moving

move randomly

retard

Antwoorddetails

Lees lesnotitie op Newton’s Laws Of Motion (WAEC)

Lees lesnotitie op Motion (JAMB)

Newton’s Laws Of Motion

Motion

Bekijk antwoord

Vraag 22 Verslag

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 Juist antwoord

12.600km

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Current Electricity

Bekijk antwoord

Vraag 23 Verslag

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° Juist antwoord

29.5°

60.0°

63.4°

Antwoorddetails

Lees lesnotitie op Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

Bekijk antwoord

Vraag 24 Verslag

A body accelerating will have a constant speed if it is

falling from a height

in equilibrium

moving in a circular path Juist antwoord

moving in a straight line

oscillating

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (WAEC)

Lees lesnotitie op Rectilinear Acceleration (WAEC)

Scalars And Vectors

Rectilinear Acceleration

Bekijk antwoord

Vraag 25 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Heat Energy (WAEC)

Heat Energy

Bekijk antwoord

Vraag 26 Verslag

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 Juist antwoord

Antwoorddetails

Lees lesnotitie op Description Property Of Fields (WAEC)

Lees lesnotitie op Sound Waves (WAEC)

Description Property Of Fields

Sound Waves

Bekijk antwoord

Vraag 27 Verslag

Determine the value of x from the nuclear reaction below,

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

220

222 Juist antwoord

224

226

228

Antwoorddetails

Lees lesnotitie op Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Bekijk antwoord

Vraag 28 Verslag

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 Juist antwoord

3800.0 Nm^-1

Antwoorddetails

Lees lesnotitie op Elasticity (JAMB)

Elasticity

Bekijk antwoord

Vraag 29 Verslag

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 Juist antwoord

Voltaic cell

Wet Leclanche cell

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Electric Cells (JAMB)

Current Electricity

Electric Cells

Bekijk antwoord

Vraag 30 Verslag

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

It has no definite shape

It is compressible

Its molecules are closely packed Juist antwoord

Its molecules gain kinetic energy when heated

Its molecules move about randomly

Antwoorddetails

Bekijk antwoord

Vraag 31 Verslag

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 Juist antwoord

2.00s

3.14s

6.28s

Antwoorddetails

Lees lesnotitie op Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

Bekijk antwoord

Vraag 32 Verslag

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 Juist antwoord

1914m

3828m

8700m

17400m

Antwoorddetails

Lees lesnotitie op Motion (JAMB)

Motion

Bekijk antwoord

Vraag 33 Verslag

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

Adhesion

Capillarity

Cohesion

Osmosis

Surface tension Juist antwoord

Antwoorddetails

Bekijk antwoord

Vraag 34 Verslag

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 Juist antwoord

Interference and polarization

Reflection and photoelectric effect

Antwoorddetails

Lees lesnotitie op Wave-particle Paradox (WAEC)

Wave-particle Paradox

Bekijk antwoord

Vraag 35 Verslag

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 Juist antwoord

Y is inverted while X is erect

Y is real while X is virtual.

Antwoorddetails

Lees lesnotitie op Simple A.C. Circuits (WAEC)

Lees lesnotitie op Reflection Of Light At Plane And Curved Surfaces (JAMB)

Simple A.C. Circuits

Reflection Of Light At Plane And Curved Surfaces

Bekijk antwoord

Vraag 36 Verslag

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 Juist antwoord

Water boils at a definite temperature

Water evaporates at all temperatures

Water has its maximum density at 4°C

Antwoorddetails

Lees lesnotitie op Change Of State (JAMB)

Change Of State

Bekijk antwoord

Vraag 37 Verslag

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 Juist antwoord

q ÷ 4πe_o²d

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 38 Verslag

In which of the following fields is repulsion NOT experienced?

Electrical only

Gravitational only Juist antwoord

Magnetic only

Magnetic and electrical

Magnetic and gravitational

Antwoorddetails

Lees lesnotitie op Electric Field (WAEC)

Lees lesnotitie op Gravitational Field (JAMB)

Electric Field

Gravitational Field

Bekijk antwoord

Vraag 39 Verslag

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

amount of current passed

direction of the current Juist antwoord

nature of the material used

orientation of the magnetic material in space

size of the magnetic material

Antwoorddetails

Bekijk antwoord

Vraag 40 Verslag

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 Juist antwoord

1.7s

2.0s

3.4s

Antwoorddetails

Lees lesnotitie op Motion (JAMB)

Motion

Bekijk antwoord

Vraag 41 Verslag

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 Juist antwoord

25.60A

27.68A

Antwoorddetails

Lees lesnotitie op Simple A.C. Circuits (WAEC)

Lees lesnotitie op Elementary Modern Physics (JAMB)

Simple A.C. Circuits

Elementary Modern Physics

Bekijk antwoord

Vraag 42 Verslag