NECO SSCE - Physics - 2009 (Objective)

Swali 1 Ripoti

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

low boiling point Jibu sahihi

Low evaporating rate

high conductivity

high density

high viscosity

Maelezo ya Majibu

Tazama Jibu

Swali 2 Ripoti

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 Jibu sahihi

25.60A

27.68A

Maelezo ya Majibu

Soma maelezo ya somo kwenye Simple A.C. Circuits (WAEC)

Soma maelezo ya somo kwenye Elementary Modern Physics (JAMB)

Simple A.C. Circuits

Elementary Modern Physics

Tazama Jibu

Swali 3 Ripoti

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

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

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Simple Machines (JAMB)

Simple Machines

Tazama Jibu

Swali 4 Ripoti

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 Jibu sahihi

2.00s

3.14s

6.28s

Maelezo ya Majibu

Soma maelezo ya somo kwenye Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

Tazama Jibu

Swali 5 Ripoti

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 Jibu sahihi

Y is inverted while X is erect

Y is real while X is virtual.

Maelezo ya Majibu

Soma maelezo ya somo kwenye Simple A.C. Circuits (WAEC)

Soma maelezo ya somo kwenye Reflection Of Light At Plane And Curved Surfaces (JAMB)

Simple A.C. Circuits

Reflection Of Light At Plane And Curved Surfaces

Tazama Jibu

Swali 6 Ripoti

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 Jibu sahihi

1914m

3828m

8700m

17400m

Maelezo ya Majibu

Soma maelezo ya somo kwenye Motion (JAMB)

Motion

Tazama Jibu

Swali 7 Ripoti

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 Jibu sahihi

12.600km

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

Current Electricity

Tazama Jibu

Swali 8 Ripoti

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 Jibu sahihi

20J

100J

1000J

2000J

Maelezo ya Majibu

Soma maelezo ya somo kwenye Energy (WAEC)

Soma maelezo ya somo kwenye Work, Energy And Power (WAEC)

Energy

Work, Energy And Power

Tazama Jibu

Swali 9 Ripoti

The phenomenon of photoelectric effect is used in the following EXCEPT

automatic doors

bugler alarm

electric fire alarm

sound production from film tracks Jibu sahihi

television cameras

Maelezo ya Majibu

Soma maelezo ya somo kwenye Structure Of The Atom (Nigeria Only) (WAEC)

Soma maelezo ya somo kwenye Electromagnetic Field (Part 2) (WAEC)

Structure Of The Atom (Nigeria Only)

Electromagnetic Field (Part 2)

Tazama Jibu

Swali 10 Ripoti

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 Jibu sahihi

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Pressure (JAMB)

Soma maelezo ya somo kwenye Liquids At Rest (JAMB)

Pressure

Liquids At Rest

Tazama Jibu

Swali 11 Ripoti

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

amount of current passed

direction of the current Jibu sahihi

nature of the material used

orientation of the magnetic material in space

size of the magnetic material

Maelezo ya Majibu

Tazama Jibu

Swali 12 Ripoti

Determine the value of x from the nuclear reaction below,

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

220

222 Jibu sahihi

224

226

228

Maelezo ya Majibu

Soma maelezo ya somo kwenye Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Tazama Jibu

Swali 13 Ripoti

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 Jibu sahihi

200.0Hz

Maelezo ya Majibu

Soma maelezo ya somo kwenye Elementary Modern Physics (JAMB)

Elementary Modern Physics

Tazama Jibu

Swali 14 Ripoti

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° Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

Soma maelezo ya somo kwenye Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

Tazama Jibu

Swali 15 Ripoti

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

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

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

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

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

Maelezo ya Majibu

Tazama Jibu

Swali 16 Ripoti

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

It has no definite shape

It is compressible

Its molecules are closely packed Jibu sahihi

Its molecules gain kinetic energy when heated

Its molecules move about randomly

Maelezo ya Majibu

Tazama Jibu

Swali 17 Ripoti

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 Jibu sahihi

2.5

12.5

100

Maelezo ya Majibu

Soma maelezo ya somo kwenye Newton’s Laws Of Motion (WAEC)

Newton’s Laws Of Motion

Tazama Jibu

Swali 18 Ripoti

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 Jibu sahihi

q ÷ 4πe_o²d

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 19 Ripoti

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 Jibu sahihi

Violin and organ

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

Soma maelezo ya somo kwenye Sound Waves (WAEC)

Current Electricity

Sound Waves

Tazama Jibu

Swali 20 Ripoti

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

30°

45° Jibu sahihi

60°

75°

90°

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (WAEC)

Soma maelezo ya somo kwenye Motion (JAMB)

Scalars And Vectors

Motion

Tazama Jibu

Swali 21 Ripoti

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

accelerate

be reluctant to move when at rest Jibu sahihi

experience friction when moving

move randomly

retard

Maelezo ya Majibu

Soma maelezo ya somo kwenye Newton’s Laws Of Motion (WAEC)

Soma maelezo ya somo kwenye Motion (JAMB)

Newton’s Laws Of Motion

Motion

Tazama Jibu

Swali 22 Ripoti

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 Jibu sahihi

100N

125N

225N

250N

Maelezo ya Majibu

Soma maelezo ya somo kwenye Newton’s Laws Of Motion (WAEC)

Soma maelezo ya somo kwenye Work, Energy And Power (WAEC)

Newton’s Laws Of Motion

Work, Energy And Power

Tazama Jibu

Swali 23 Ripoti

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 Jibu sahihi

Water boils at a definite temperature

Water evaporates at all temperatures

Water has its maximum density at 4°C

Maelezo ya Majibu

Soma maelezo ya somo kwenye Change Of State (JAMB)

Change Of State

Tazama Jibu

Swali 24 Ripoti

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 Jibu sahihi

Interference and polarization

Reflection and photoelectric effect

Maelezo ya Majibu

Soma maelezo ya somo kwenye Wave-particle Paradox (WAEC)

Wave-particle Paradox

Tazama Jibu

Swali 25 Ripoti

In which of the following fields is repulsion NOT experienced?

Electrical only

Gravitational only Jibu sahihi

Magnetic only

Magnetic and electrical

Magnetic and gravitational

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electric Field (WAEC)

Soma maelezo ya somo kwenye Gravitational Field (JAMB)

Electric Field

Gravitational Field

Tazama Jibu

Swali 26 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Heat Energy (WAEC)

Heat Energy

Tazama Jibu

Swali 27 Ripoti

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 Jibu sahihi

Voltaic cell

Wet Leclanche cell

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

Soma maelezo ya somo kwenye Electric Cells (JAMB)

Current Electricity

Electric Cells

Tazama Jibu

Swali 28 Ripoti

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° Jibu sahihi

29.5°

60.0°

63.4°

Maelezo ya Majibu

Soma maelezo ya somo kwenye Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

Tazama Jibu

Swali 29 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Gravitational Field (JAMB)

Gravitational Field

Tazama Jibu

Swali 30 Ripoti

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 Jibu sahihi

112s

130s

168s

280s

Maelezo ya Majibu

Soma maelezo ya somo kwenye Heat Energy (WAEC)

Heat Energy

Tazama Jibu

Swali 31 Ripoti

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 Jibu sahihi

1.7s

2.0s

3.4s

Maelezo ya Majibu

Soma maelezo ya somo kwenye Motion (JAMB)

Motion

Tazama Jibu

Swali 32 Ripoti

A series RLC circuit is said to resonate, when

capacitive reactance is zero

conductance is maximum

current is minimum

impedance is minimum Jibu sahihi

inductive reactance is zero

Maelezo ya Majibu

Soma maelezo ya somo kwenye Capacitors (JAMB)

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

Soma maelezo ya somo kwenye Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Soma maelezo ya somo kwenye Simple A.C Circuits (JAMB)

Soma maelezo ya somo kwenye Introductory Electronics (JAMB)

Capacitors

Scalars And Vectors

Properties Of Waves: Reflection, Refraction, Diffraction

Simple A.C Circuits

Introductory Electronics

Tazama Jibu

Swali 33 Ripoti

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

astigmatism

hypermetropia

myopia

presbyopia Jibu sahihi

spherical aberration

Maelezo ya Majibu

Soma maelezo ya somo kwenye Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

Tazama Jibu

Swali 34 Ripoti

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

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

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Tazama Jibu

Swali 35 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Tazama Jibu

Swali 36 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Description Property Of Fields (WAEC)

Soma maelezo ya somo kwenye Sound Waves (WAEC)

Description Property Of Fields

Sound Waves

Tazama Jibu

Swali 37 Ripoti

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 Jibu sahihi

3800.0 Nm^-1

Maelezo ya Majibu

Soma maelezo ya somo kwenye Elasticity (JAMB)

Elasticity

Tazama Jibu

Swali 38 Ripoti

The term torque means

the equilibrant of two concurrent forces

the moment of a force about an ads Jibu sahihi

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

Soma maelezo ya somo kwenye Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

Tazama Jibu

Swali 39 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Capacitors (JAMB)

Capacitors

Tazama Jibu

Swali 40 Ripoti

Which of the following substances undergoes sublimation?

Ether

Ice

Iodine Jibu sahihi

Naphthalene

Turpentine

Maelezo ya Majibu

Soma maelezo ya somo kwenye Change Of State (JAMB)

Soma maelezo ya somo kwenye Vapours (JAMB)

Change Of State

Vapours

Tazama Jibu

Swali 41 Ripoti

A body accelerating will have a constant speed if it is

falling from a height

in equilibrium

moving in a circular path Jibu sahihi

moving in a straight line

oscillating

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (WAEC)

Soma maelezo ya somo kwenye Rectilinear Acceleration (WAEC)

Scalars And Vectors

Rectilinear Acceleration

Tazama Jibu

Swali 42 Ripoti

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

condensation

conduction

convection Jibu sahihi

evaporation

radiation

Maelezo ya Majibu

Soma maelezo ya somo kwenye Heat Transfer (JAMB)

Heat Transfer

Tazama Jibu

Swali 43 Ripoti

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

conical

cubical

cylindrical Jibu sahihi

parabolic

spherical

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 44 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

Soma maelezo ya somo kwenye Motion (JAMB)

Scalars And Vectors

Motion

Tazama Jibu

Swali 45 Ripoti

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

Adhesion

Capillarity

Cohesion

Osmosis

Surface tension Jibu sahihi

Maelezo ya Majibu

Tazama Jibu






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