NECO SSCE - Physics - 2005 (Objective)

Question 1 Report

The wave theory of light does not explain photoelectricity because

light waves carry little energy Correct answer

particles cannot be emitted by waves

the frequency of light waves too high

there is a threshold wavelength for electron emission

the wavelength of Light waves is too short.

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 2 Report

When some ice cubes are added to a glass of warm water, the glass is cooled by a process of

conduction only

convection only

conduction and convection Correct answer

conduction and radiation

radiation only

Answer Details

Read lesson note on Heat Transfer (JAMB)

Read lesson note on Simple A.C Circuits (JAMB)

Heat Transfer

Simple A.C Circuits

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Question 3 Report

Which of the following will reduce the frequency of oscillation of a simple pendulum?

Decreasing the length of the string

Increasing the amplitude of oscillation

Increasing the length of the string Correct answer

Increasing the mass of the bob

Reducing the mass of the bob.

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Question 4 Report

Which of the following statements is/are correct in any machine?

I. The velocity ratio is usually greater than the mechanical advantage.
II. Efficiency work inputwork outputIII. The velocity ratio is independent of friction.

I only

III only

I and II only

I and III only Correct answer

II and III only

Answer Details

Read lesson note on Simple Machines (JAMB)

Simple Machines

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Question 5 Report

A body moves along a circular path with uniform angular speed of 0.6 rad s^-1 and at a constant speed of 3.0 ms^-1.

Calculate the acceleration of the body towards the centre of the circle.

0.2.ms^-2

1.8 ms^-2 Correct answer

5.0 ms^-2

5.4 ms^-2

25.0 ms^-2

Answer Details

Read lesson note on Scalars And Vectors (JAMB)

Read lesson note on Motion (WAEC)

Scalars And Vectors

Motion

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Question 6 Report

Which of the following is used for shielding radioactive fallout?

Aluminum

Lead Correct answer

Iron

Plastic

Wood

Answer Details

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

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

Magnetic Field (Part 1)

Electromagnetic Field (Part 2)

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Question 7 Report

An electric motor primary converts

electrical energy to chemical energy

electrical energy to heat energy

electrical energy to mechanical energy Correct answer

mechanical energy to electrical energy

mechanical energy to light energy

Answer Details

Read lesson note on Current Electricity (JAMB)

Read lesson note on Heat Energy (WAEC)

Current Electricity

Heat Energy

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Question 8 Report

The amplitude of oscillation of a simple pendulum bob diminishes slowly because

energy is applied by some external agencies

frictional forces dissipate the energy of motion

the frequency of oscillation increases with the mass of the bob

the frequency of oscillation varies with time Correct answer

the period of oscillation varies with time.

Answer Details

Read lesson note on Work, Energy And Power (WAEC)

Read lesson note on Equilibrium Of Forces (WAEC)

Work, Energy And Power

Equilibrium Of Forces

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Question 9 Report

Which of the following is/are longitudinal wave(s)?

I. Light waves from the sun
II. Sound waves in the air
III. Waves on a vibrating string

I only

II only Correct answer

I and II only

I and III only

II and III only

Answer Details

Read lesson note on Sound Waves (WAEC)

Sound Waves

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Question 10 Report

Which of the following is NOT a component of a slide projector?

Concave mirror

Condenser

Convex mirror Correct answer

light source

Screen.

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 11 Report

A voltage of 240V is connected to the primary coil of a the rating of the primary turns to the secondary turns if the voltage available at the secondary coil is 15V

0.06

0.9

1.6

16 Correct answer

Answer Details

Read lesson note on Waves (JAMB)

Waves

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Question 12 Report

Two metals A and B lose the same quantity of heat when their temperatures drop from 20°C to 15°C. If the specific heat Capacity of A Ii thrice that of B, calculate the ratio of the mass of A to that of B.

3:01 Correct answer

4:03

3:04

1:02

1:03

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Question 13 Report

Which of the following pairs is an example of translucent bodies?

Cardboard and moon

Clear water and glass

Frosted glass and waxed paper Correct answer

Oiled paper and brick

Wood and metal sheet

Answer Details

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

Properties Of Waves: Reflection, Refraction, Diffraction

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Question 14 Report

An object is placed in front of a concave mirror whose radius of curvature is 12cm. If the magnification of the Image produced is 1.5, how far is the object from the mirror?

8cm

10cm Correct answer

15cm

18cm

20cm

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 15 Report

A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave.

1.3 × 10²m

3.0 × 10²m

2.4 × 10²m

5.0 × 10²m

7.5 × 10²m Correct answer

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 16 Report

The mercury column in a simple mercury barometer is of height 5m above the mercury in a reservoir. If the tube is replaced with one whose radius is twice that of the first tube, what will be the height of the mercury column in the new tube?

2.5m Correct answer

5.0m

7.5m

10.0m

20.0m

Answer Details

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Question 17 Report

The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the

angle of declination Correct answer

angle of depression

angle of dip.

latitude of the place

longitude of the place

Answer Details

Read lesson note on Electric Field (WAEC)

Electric Field

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Question 18 Report

Which of the statements is/are true of two bodies involved in an inelastic collision? After collision.

I. the kinetic energy increases
II. The momentum decreases
III. Their velocities are the same.

I only

II Only

III only Correct answer

I and II only

II and III only

Answer Details

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Question 19 Report

Mercury does NOT wet glass because

glass is an amorphous substance

the adhesive force is greater than the cohesive force

the cohesive force is greater than the adhesive force. Correct answer

mercury has very high thermal conductivity

mercury is opaque.

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 20 Report

Calculate the peak voltage that could be obtained from a 220 V\(_{r.m.s}\)main supply.

70.7V

110.0V

155.6V

311.1V Correct answer

440.0V

Answer Details

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Question 21 Report

The length of a simple pendulum is increased by a factor of four. By what factor is its period Increased?

0.25

0.5

1.66

2 Correct answer

Answer Details

Read lesson note on Simple Harmonic Motion (WAEC)

Simple Harmonic Motion

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Question 22 Report

The following are derived units EXCEPT

kg m^-3

m³

kg Correct answer

Answer Details

Read lesson note on Measurements And Units (JAMB)

Measurements And Units

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Question 23 Report

Three non-parallel coplanar forces which can be represented both in magnitude and direction by the three sides of a triangle taken in order will

have any one force being the equilibrant of the other two Correct answer

make a body move randomly

make a body oscillate

move a body along a straight line

rotate a body about its axis

Answer Details

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Question 24 Report

A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is

Fs cos θ Correct answer

Fs cosec θ

Fs sec θ

Fs sin θ

Fs tan θ

Answer Details

Read lesson note on Induction (JAMB)

Read lesson note on Work, Energy And Power (WAEC)

Read lesson note on Equilibrium Of Forces (WAEC)

Induction

Work, Energy And Power

Equilibrium Of Forces

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Question 25 Report

A 12V battery supplies a current of 0.4A to a lamp. Calculate the resistance of the lamp.

30.00 Correct answer

4.80

3.00

0.30

0.03

Answer Details

Read lesson note on Current Electricity (JAMB)

Current Electricity

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Question 26 Report

An object of mass 5.0 cg moving with a velocity of 12ms^-1 due north hits a stationary body of mass 7.0kg. If they stick together after collision and move with velocity V due north, calculate the magnitude of V.

12ms^-1

7ms^-1

6ms^-1

5ms^-1 Correct answer

4ms^-1

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 27 Report

The escape velocity of an object from the gravitational field of a planet

I. Increases with the mass of the object
II. Increases with the mass of the planet
III. Is smaller on the moon than on the earth. Which of the above statements is/are correct?

I only

II only

I and II only

II and III only Correct answer

I, II and III

Answer Details

Read lesson note on Gravitational Field (JAMB)

Gravitational Field

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Question 28 Report

Which of the following is NOT a component of an a.c. generator?

Armature

Carbon brushes

Magnet

Slip ring

Split rings Correct answer

Answer Details

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Question 29 Report

In which of the following is the expansion of solids a disadvantage?

Electric iron

Fire alarm

The balance wheel of a watch Correct answer

The bimetallic thermometer

The fitting of wheels in rims

Answer Details

Read lesson note on Friction (JAMB)

Read lesson note on Elasticity (JAMB)

Friction

Elasticity

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Question 30 Report

The charge of an alpha particle can be neutralized by

1 beta particle

2 photons of gamma rays

2 beta particles Correct answer

4 beta particles

4 photons of gamma rays

Answer Details

Read lesson note on Electrostatics (JAMB)

Electrostatics

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Question 31 Report

The motion of the wheel of a bicycle moving on a smooth straight road is

oscillatory and random

oscillatory and translational

rotational and oscillatory

rotational and random

rotational and translational Correct answer

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 32 Report

A projectile is projected with an initial velocity u, at an angle θ to the horizontal. The maximum height attained is.

U² sin \(\frac{\theta}{g}\)

2U² sin² \(\frac{\theta}{g}\)

U sin² \(\frac{\theta}{g}\)

U² sin²\(\frac{\theta}{g}\) Correct answer

Answer Details

Read lesson note on Motion (JAMB)

Motion

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Question 33 Report

A constant force acts on a body of mass 50kg and changes its speed from 20ms^-1 to 90ms^-1 in 10 seconds. Calculate the magnitude of the force applied.

590N

500N

450N

350N Correct answer

180N

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 34 Report

A stone of mass 0.7 kg is projected vertically upward with a speed of 5 ms-1. Calculate the maximum height reached. [g =10ms^-2]

1.25m Correct answer

1.50m

2.50m

3.75m

5.00Nm

Answer Details

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Question 35 Report

491 K is equivalent to

273 °C

218 °C Correct answer

373 °C

491 °C

764 °C

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Question 36 Report

Which of the following is a percussion Instrument?

Flute

Guitar

Piano

Trumpet

Xylophone Correct answer

Answer Details

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Question 37 Report

The most suitable instrument for measuring the diameter of a thin wire is a

meter rule

micrometer screw gauge Correct answer

pair of dividers

pair of engineer’s calipers

venire calipers

Answer Details

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Question 38 Report

Notes of the same frequency sounded on a guitar and trumpet may differ in

I. loudness
II. Pitch
III. quality Which of the statements above is correct?

I only

II only

III only Correct answer

I and II only

I, II and III

Answer Details

Read lesson note on Sound Waves (WAEC)

Read lesson note on Light Waves (WAEC)

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

Sound Waves

Light Waves

Properties Of Waves: Reflection, Refraction, Diffraction

View Answer

Question 39 Report

Radio receivers are tuned using

electromagnets

electric motors

Inductors

variable capacitors Correct answer

variable resistors

Answer Details

Read lesson note on Capacitors (JAMB)

Read lesson note on Electric Field (WAEC)

Capacitors

Electric Field

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Question 40 Report

Calculate the magnitude of the force due to a magnetic field of 0.40T on an electron moving perpendicular to the field with a speed of 4.00 × 106ms^-1 (e 1.60 × 10^-19C]

6.40 × ^-10

6.40× 10^-13N

2.56 × 10^-13N Correct answer

1.60 × 10^-12N

2.30 × 10^-11N

Answer Details

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

Magnetic Field (Part 1)

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Question 41 Report

Which of the following is a non-renewable energy source?

Coal Correct answer

Hydro

Ocean waves

Solar

Tides

Answer Details

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

Electromagnetic Field (Part 1)

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Question 42 Report

Which of the following is a desirable property of a fuse Wire?

High expansively

High thermal conductivity

Low density

Low electrical resistivity Correct answer

Low melting point

Answer Details

Read lesson note on Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Question 43 Report

Which of the following radiations has the shortest wavelength?

Infrared rays

Light waves

Microwaves

Ultraviolet rays

X-rays Correct answer

Answer Details

Read lesson note on Sound Waves (WAEC)

Read lesson note on Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Read lesson note on Light Waves (WAEC)

Sound Waves

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Light Waves

View Answer

Question 44 Report

An atom radiates 1.5 × 10^-19J when an electron jumps from one level to another. What is the wavelength of the emitted radiation? (Planck’s constant 6.6 × l0^-34Js ; Speed of light in vacuum = 3.0 × 108ms^-1)

1.32 × 10^-6m Correct answer

2.97 × 10^-6m

3.30 × 10^-6m

6.82 × 10^-6m

8.01 × 10m^-6

Answer Details

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

Structure Of The Atom (Nigeria Only)

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Question 45 Report

When a yellow card is viewed in blue light, It will appear

black Correct answer