NECO SSCE - Physics - 2002 (Objective)

An object is projected with a velocity of 50ms^-1 from ground level at an angle θ to the vertical. If the total time of flight of the projectile is 5s, what is the value of θ? (g = 10ms^-2)

0°

30° Correct answer

45°

60°

90°

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 7 Report

Which process will increase the rate of oscillation of a pendulum?

decreasing the amplitude of oscillation of the pendulum

decreasing the length of the pendulum Correct answer

decreasing the mass of the pendulum

increasing the length of the pendulum

increasing the mass of the pendulum.

Answer Details

Read lesson note on Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Question 8 Report

A man stands in front f a high wall and produces a sound. If he receives the echo of the sound four seconds later, what is his distance from the wall? [The speed of sound in air is 330ms^-1]

1320m

660m Correct answer

400m

330m

165m

Answer Details

Read lesson note on Sound Waves (WAEC)

Read lesson note on Propagation Of Sound Waves (JAMB)

Sound Waves

Propagation Of Sound Waves

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Question 9 Report

Lenz’s law of electromagnetic induction states that

e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit

the induced e.m.f. in a circuit is proportional to the rate of change f the number of lines of force linking the circuit

the induced current in a conductor is in such a direction as to oppose the change producing it Correct answer

a force is exerted in a current-carrying conductor in a magnetic field.

the induced e.m.f. is proportional to the current producing the magnetic flux.

Answer Details

Read lesson note on Electric Field (WAEC)

Electric Field

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Question 10 Report

The use of electrical fuses in domestic wiring is

to prevent and electrical shock

to supply electricity to all the electrical appliances

to allow electricity to flow easily through the mains to all the circuits

to cut off the mains supply it too high a current flows Correct answer

to fuse all the circuit into one

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Electrostatics (JAMB)

Capacitors

Electrostatics

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Question 11 Report

It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the

Crompton effect

de Broglie’s laws

Frank-Hertz experimental law

Heisenberg’s uncertainly principle Correct answer

wave-particle paradox

Answer Details

Read lesson note on Wave-particle Paradox (WAEC)

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

Wave-particle Paradox

Properties Of Waves: Reflection, Refraction, Diffraction

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Question 12 Report

A body of mass M₁ moving with a velocity U collides with a stationary body of mass M₂ and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?

M₁ + M₂ ÷ M₁U

M₂U ÷ M₁ – M₂

M₁U ÷ M₁ – M₂

M₁U ÷ M₁+ M₂ Correct answer

M₂U ÷ M₁ + M₂

Answer Details

Read lesson note on Rectilinear Acceleration (WAEC)

Read lesson note on Equilibrium Of Forces (WAEC)

Rectilinear Acceleration

Equilibrium Of Forces

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Question 13 Report

A body of mass 4 kg is accelerated from rest by a steady force of 9N. What is its speed when it has travelled a distance of 8m?

6 ms^-1 Correct answer

18 ms^-1

32 ms^-1

36 ms^-1

48 ms^-1

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 14 Report

Which of the following is a percussion instrument?

bell Correct answer

flute

guitar

piano

organ

Answer Details

Read lesson note on Thermal Expansion (JAMB)

Thermal Expansion

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Question 15 Report

What is stored by a dry Leclanhé cell?

chemical energy Correct answer

heat energy

mechanical energy

nuclear energy

solar energy

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Read lesson note on Electric Cells (JAMB)

Electric Cells

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Question 16 Report

A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How far from the lens is the object?

2.0cm

4.0 cm Correct answer

6.7cm

20.0cm

25.0cm

Answer Details

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

Read lesson note on Electrostatics (JAMB)

Properties Of Waves: Reflection, Refraction, Diffraction

Electrostatics

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Question 17 Report

A body is uniformly accelerated from rest. Which of the following quantities vary/varies linearly with the square of the time?

I. Displacement
II. Velocity
III. Momentum

I only Correct answer

II only

III only

I and II only

II and Ill only

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 18 Report

If the refractive index of water is 1.33, what is the critical angle for a water-air boundary?

36.0 °

40.2 °

41.8 °

48.8 ° Correct answer

62.7 °

Answer Details

Read lesson note on Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Question 19 Report

When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte?

30.0g

24.0g

10.0g Correct answer

6.0g

0.4g

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

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Question 20 Report

What is the escape velocity of a satellite launched from the earth’s surface? (Take g as 10ms^-2 and the radius of the earth as 6.4 × 10⁶m)

7.80 × 10-3ms^-1

1.13 × 10-4ms^-1 Correct answer

3.56 × 107ms^-1

6.00 × 107ms^-1

1.20 × 108ms^-1

Answer Details

Read lesson note on Gravitational Field (WAEC)

Gravitational Field

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Question 21 Report

A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If it has a maximum

1100ms^-1

440 ms^-1

220 ms^-1

22 ms^-1

2.2ms^-1 Correct answer

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Question 22 Report

An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?

10k

50k Correct answer

N1.00

N5.00

N10.00

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

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Question 23 Report

An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?

0.10N

0.36N

0.80N

1.00N Correct answer

3.60N

Answer Details

Read lesson note on Pressure (JAMB)

Read lesson note on Elasticity (JAMB)

Pressure

Elasticity

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Question 24 Report

An a.c. generator can be converted into a d.c. generator by replacing

the slip rings with split-ring commutators Correct answer

the slip rings with armatures

the split-rings with slip rings

the split-rings with brushes

the brushes with slip-ring commutators.

Answer Details

Read lesson note on Capacitors (JAMB)

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

Capacitors

Electromagnetic Field (Part 2)

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Question 25 Report

According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?

a decrease in the mean speed kinetic energy of the molecules Correct answer

an increase in the mean speed of the molecules

an increase in the momentum change at each collision.

an increase in the number of collisions per second

an increase in the pressure exerted by the gas.

Answer Details

Read lesson note on Thermal Expansion (JAMB)

Thermal Expansion

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Question 26 Report

Which of the following is/are TRUE of nuclear fission?

I. A heavy nucleus is split into two nuclei of comparable masses.
II. Two light nuclei are joined together to form a heavier nucleus.
III. The total mass of the products is less than that of the reactants.

I only

II only

III only

I and III only Correct answer

II and III only

Answer Details

Read lesson note on Structure Of The Nucleus (WAEC)

Structure Of The Nucleus

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Question 27 Report

The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals?

16V

200V

4000V Correct answer

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Current Electricity (JAMB)

Capacitors

Current Electricity

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Question 28 Report

The phenomenon of photoelectric effect is NOT used in

automatic doors

bimetallic strip thermometers Correct answer

light meters in cameras

setting off burglar alarms

sound production from film tracks.

Answer Details

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

Structure Of The Atom (Nigeria Only)

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Question 29 Report

A body of weight 20N displaces 12N of the liquid in which it is immersed. What is the upthrust of the liquid on the body?

240N

32N

20N

12N Correct answer

Answer Details

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Question 30 Report

Which is a fundamental unit?

ampere Correct answer

joule

Newton

ohm

watt

Answer Details

Read lesson note on Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

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Question 31 Report

The ability of the eye to focus on objects at various distances is known as

accommodation Correct answer

astigmatism

eye ring

myopia

presbyopia

Answer Details

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

Structure Of The Atom (Nigeria Only)

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Question 32 Report

What part of the camera corresponds to the iris of the eye?

diaphragm Correct answer

film

focusing ring

lens

shutter

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 33 Report

In the normal use of a simple microscope, a person sees an

erect, real and magnified image

erect, virtual and magnified image Correct answer

inverted, virtual and magnified image

inverted, real and magnified image

inverted and real image the same size as the object

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 34 Report

An air bubble of volume 4cm³ is formed 20m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10cm of water?

2cm³

4cm³

6cm³

8cm³

12cm³ Correct answer

Answer Details

Read lesson note on Pressure (JAMB)

Pressure

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Question 35 Report

A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A from the mains when used to light a 12V, 24W lamp, what is its efficiency?

57.20%

66.60%

83.30% Correct answer

92.50%

100%

Answer Details

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Question 36 Report

Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?

Alpha rays

Gamma rays

Positive rays

Ultraviolet rays

X-rays Correct answer

Answer Details

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

Read lesson note on Electromagnetic Field (Part 1) (WAEC)

Electromagnetic Field (Part 2)

Electromagnetic Field (Part 1)

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Question 37 Report

Which colour is deviated least when white light passes through a triangular prism?

green

indigo

red Correct answer

violet

yellow

Answer Details

Read lesson note on Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Question 38 Report

What does NOT affect the rate of evaporation of a liquid

exposed surface area of the liquid

humidity of the surroundings

nature of the liquid

temperature the liquid

volume of the liquid. Correct answer

Answer Details

Read lesson note on Vapours (JAMB)

Vapours

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Question 39 Report

If the temperature of a resistance wire is gradually increased, its resistance will

decrease gradually

first increase and then decrease

first increase and then remain the same Correct answer

increase gradually

remain the same

Answer Details

Read lesson note on Change Of State (JAMB)

Change Of State

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Question 40 Report

A platinum-resistance thermometer has a resistance of 10 ω at 0°C and 18 ω at 100°C. Assuming that resistance changes uniformly with temperature, what is the resistance of the thermometer when the temperature is 45°C?

27.8

17.8

13.6 Correct answer

6.4

3.6

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Question 41 Report

A block of ice of mass 10kg at 0°C absorbs heat energy from its surroundings and changes to water at the same temperature. The heat absorbed is referred to as

heat capacity

latent heat Correct answer

specific heat

specific heat capacity

specific latent heat.

Answer Details

Read lesson note on Heat Energy (WAEC)

Read lesson note on Quantity Of Heat (JAMB)

Read lesson note on Elasticity (JAMB)

Heat Energy

Quantity Of Heat

Elasticity

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Question 42 Report

A negatively charged rod is brought near the cap of an electroscope. The cap is earthed momentarily while the charge is near to it. The rod is then removed. Which statement is correct?

The cap will be positively charged and the will be negatively charged

The cap will be negatively charged and the leaf will be positively changed

The cap and the leaf will be positively charged

The cap and the leaf will be negatively charged Correct answer

none

Answer Details

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

Read lesson note on Electrostatics (JAMB)

Structure Of The Atom (Nigeria Only)

Electrostatics

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Question 43 Report

A brass cube of side 10cm is heated through 30°C. If the linear expansivity of brass is 2.0 × I0\(^{-5}\) K-1 , what is the increase in its volume?

0.06 cm³

0.18cm³

0.60cm³

1.20cm³

1.80cm³ Correct answer

Answer Details

Read lesson note on Thermal Expansion (JAMB)

Thermal Expansion

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Question 44 Report

Which device does NOT make use of the magnetic effects of an electric current?

hot-wire ammeter Correct answer

moving-coil ammeter

moving-coil loudspeaker

moving-iron ammeter

telephone earpiece

Answer Details

Read lesson note on Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

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Question 45 Report

If the size of the hole of a pinhole camera is increased, the image formed becomes

brighter and blurred

brighter and larger

brighter and sharper

blurred and duller

blurred and larger Correct answer

Answer Details

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

Read lesson note on Electrostatics (JAMB)

Electromagnetic Field (Part 2)

Electrostatics

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Question 46 Report

An object 8cm in front of a plane mirror moves at a speed of 6cm s^-1 away from the mirror. What will be the distance separating the object and the image after 2s?

8cm

12cm

20cm

28cm

40cm Correct answer

Answer Details

Read lesson note on Current Electricity (JAMB)

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

Current Electricity

Reflection Of Light At Plane And Curved Surfaces

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Question 47 Report