JAMB UTME - Physics - 1978 | Green Bridge CBT

Vraag 1 Verslag

The equivalent capacitance for the circuit drawn above is

18µf

4µf Juist antwoord

2µf

12µf

13µf

Antwoorddetails

Lees lesnotitie op Capacitors (JAMB)

Capacitors

Bekijk antwoord

Vraag 2 Verslag

The visible part of light consists of the following colours

red, indigo, infra-red, violet, yellow, green and blue

red, green, blue, violet, indigo, orange and yellow Juist antwoord

blue, ultra-violet, infra-red, red, yellow, indigo, violet,green and orange

infra-red and ultra-violet

red, orange, yellow, green, blue, indigo and infra-red

Antwoorddetails

Lees lesnotitie op Light Energy (JAMB)

Light Energy

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Vraag 3 Verslag

Why is it impossible for the lines of force of an electric field to cross one another?

like charges repel each other

a charged particle is deflected by an eletric field

like charges are arranged on the same line of force

a positively charged particle can travel in only one direction at any time Juist antwoord

none of these is correct

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 4 Verslag

The boys are communicating with each other by stretching a string passing through a hole punched in the bottom of each of two tin cans. The physical principle employed is that sound travels

mainly through air

fainter in stretched string

faster through gases than in solids and liquids

with greater ease through a string than in air Juist antwoord

none of the above is correct

Antwoorddetails

Lees lesnotitie op Sound Waves (WAEC)

Lees lesnotitie op Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Lees lesnotitie op Propagation Of Sound Waves (JAMB)

Lees lesnotitie op Electrostatics (JAMB)

Sound Waves

Refraction Of Light Through Plane And Curved Surfaces

Propagation Of Sound Waves

Electrostatics

Bekijk antwoord

Vraag 5 Verslag

mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boiling point. which of the above statements are true?

i and ii only

i, ii and iii only Juist antwoord

iii and iv only

iv and v only

iii, iv and v only

Antwoorddetails

Lees lesnotitie op Position, Distance And Displacement (WAEC)

Lees lesnotitie op Vapours (JAMB)

Lees lesnotitie op Pressure (JAMB)

Position, Distance And Displacement

Vapours

Pressure

Bekijk antwoord

Vraag 6 Verslag

Three 5 ohms resistors connected in parallel have a potential difference of 60v. applied across the combination. The current in each resistor is

36A

12A Juist antwoord

24A

10A

Antwoorddetails

Lees lesnotitie op Capacitors (JAMB)

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Concepts Of Matter (WAEC)

Capacitors

Current Electricity

Concepts Of Matter

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Vraag 7 Verslag

A magnet is moved through a coil of wire. The e.m.f. produced in the wire depends on

the number of turns in the coil

the strength of the magnet

the speed at which the magnet is moved

all of the above Juist antwoord

none of the above

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Lees lesnotitie op Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

Bekijk antwoord

Vraag 8 Verslag

an object 1cm high placed on the axis 15cm from a converging lens forms an image 30cm from the lens. The size of the image is

0.5cm

1.5cm

3cm

2.5m

2cm Juist antwoord

Antwoorddetails

Lees lesnotitie op Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Lees lesnotitie op Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

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

Refraction Of Light Through Plane And Curved Surfaces

Properties Of Waves: Reflection, Refraction, Diffraction

Electromagnetic Field (Part 2)

Bekijk antwoord

Vraag 9 Verslag

The internationally agreed system of units(SI) for physical measurements are

Ib, ft, sec

g, m, sec

kg, m, sec Juist antwoord

cm, g, sec

kg, cm, sec

Antwoorddetails

Lees lesnotitie op Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

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Vraag 10 Verslag

An electric charge could be transmitted through

wood, rubber and stone

paper, clay and plastic

glass, acid and cloth

The human body, water and metals Juist antwoord

all of the above

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 11 Verslag

The angular dispersion of a prism depends on

the index of refraction only Juist antwoord

the angle of incidence as well as the index of refraction

the angle of incidence only

the thickness of the prism

the prism angle

Antwoorddetails

Bekijk antwoord

Vraag 12 Verslag

The net charge on the atom is zero because

the electrons and the protons that are charged are in the nucleus

the total charge on the electrons is equal to the total charge on the protons Juist antwoord

the neutrons from a shield around the charged protons

the number of electrons in an atom is half the number of protons

A and B above

Antwoorddetails

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

Structure Of The Atom (Nigeria Only)

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Vraag 13 Verslag

Every house supplied with electricity is provided with a box of fuses so that

the consumption of electricity can be recorded

people residing in the house will not have an electric shock if they touch a live wire

the total current drawn from the mains can be limited Juist antwoord

the voltage supply can be stabilized

it serves as a standby supply when there is a power failure

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 14 Verslag

The statements below were made by some students describing what happened during the determination of the melting point of solids.
i. the temperature of the solid was solid until melting started
ii. the temperature of the solid rose until melting started
iii. during melting, the temperature was rising
iv. during melting, the temperature was constant
v. the temperature continued to rise after all the solid had melted
vi. the temperature stopped rising after all the solid had melted. Which of the following gives correct statements in the right order?

ii, iv, and v Juist antwoord

ii, iii and vi

i, iii and vi

i, iii and v

i, iv and v

Antwoorddetails

Lees lesnotitie op Friction (JAMB)

Lees lesnotitie op Quantity Of Heat (JAMB)

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Friction

Quantity Of Heat

Temperature And Its Measurement

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Vraag 15 Verslag

The force required to make an object of mass m, travelling with velocity v, turn in a circle of radius r is

\(\frac{mv^2}{r}\) Juist antwoord

\(\frac{mr^2}{v}\)

\(\frac{mr}{v}\)

\(\frac{mv}{r^2}\)

\(\frac{mv}{r}\)

Antwoorddetails

Lees lesnotitie op Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Vraag 16 Verslag

The factional force between two bodies

exists only when there is relative motion or tendency for motion

acts so as to oppose the motion

depends on the normal reaction between the two surfaces

is relatively independent of the area in contact

has all of these characteristics Juist antwoord

Antwoorddetails

Lees lesnotitie op Friction (JAMB)

Lees lesnotitie op Pressure (JAMB)

Friction

Pressure

Bekijk antwoord

Vraag 17 Verslag

The density of a solid is defined as the

mass of the solid compared to the mass of an equal volume of water

amount of water displaced when a unit mass of thesolid is immersed in it

weight per unit volume of the solid

volume per unit mass of the solid

mass per unit volume of the solid Juist antwoord

Antwoorddetails

Lees lesnotitie op Characteristics Of Sound Waves (JAMB)

Lees lesnotitie op Pressure (JAMB)

Lees lesnotitie op Measurements And Units (JAMB)

Characteristics Of Sound Waves

Pressure

Measurements And Units

Bekijk antwoord

Vraag 18 Verslag

The following are some units i. Ns ii. Mm iii. Nm^-2 iv. J^oK^-1. What are the units of latent heat?

iii

iv Juist antwoord

Antwoorddetails

Bekijk antwoord

Vraag 19 Verslag

A man walks 1km due east and then 1km due north. His displacement is

1 km N15^oE

1 km N30^oE

\(\sqrt 2\)km N 45^oE Juist antwoord

\(\sqrt 2\)km N 60^oE

2km N 75^oE

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (JAMB)

Lees lesnotitie op Position, Distance And Displacement (WAEC)

Scalars And Vectors

Position, Distance And Displacement

Bekijk antwoord

Vraag 20 Verslag

A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms^-2)

4.5s

7.5s

3s Juist antwoord

Antwoorddetails

Lees lesnotitie op Gravitational Field (JAMB)

Gravitational Field

Bekijk antwoord

Vraag 21 Verslag

To determine the weight of an object you could

use a beam balance

use a spring balance

find the force necessary

use none of these methods

use any of these methods Juist antwoord

Antwoorddetails

Lees lesnotitie op Time (WAEC)

Lees lesnotitie op Measurements And Units (JAMB)

Time

Measurements And Units

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Vraag 22 Verslag

Two resistors R1 and R2 are connected in parallel, R2 being greater than R1. The combined resistance is

less than R₁ Juist antwoord

greater than R₂

the sum of R₁ and R₂

the difference of R₂ and R₁

greater thanR₁ but less than R₂

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (JAMB)

Lees lesnotitie op Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

Bekijk antwoord

Vraag 23 Verslag

A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?

6 x 10^-2 Juist antwoord

6 x 10^-3

0.6

Antwoorddetails

Lees lesnotitie op Elasticity (JAMB)

Elasticity

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Vraag 24 Verslag

In The Diagram, what is the value of W?

10N Juist antwoord

15N

20N

30N

Antwoorddetails

Bekijk antwoord

Vraag 25 Verslag

Which of the following is true for the image formed by a convex mirror? i. the image is always virtual ii. the image is always erect iii. the image lies between pole and focus iv. the image is never magnified v. the focus length is negative

i only

i and ii only

ii and iii only

i, ii, iii and iv only

all five Juist antwoord

Antwoorddetails

Lees lesnotitie op Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

Bekijk antwoord

Vraag 26 Verslag

A gas at pressure PN-m^-2 and temperature 27^oC is heated to 77^oC at constant volume. The new pressure is

0.85 PN-m^-2

0.86 PN-m^-2

1.16 PN-m^-2 Juist antwoord

1.18 PN-m^-2

2.85 PN-m^-2

Antwoorddetails

Lees lesnotitie op Quantity Of Heat (JAMB)

Quantity Of Heat

Bekijk antwoord

Vraag 27 Verslag

An ice cube floats in a glass of water filled to the brim. What happens when the ice melts?

The water level remains the same Juist antwoord

there is a drop in the level of water in the glass due to condensation on its outside

the water in the glass overflows

the level of water drops because melted ice occupies less volume

none of the above is correct

Antwoorddetails

Lees lesnotitie op Friction (JAMB)

Lees lesnotitie op Fluid At Rest (WAEC)

Friction

Fluid At Rest

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Vraag 28 Verslag

A string is sustaining a stationary wave when

the frequency of the wave is not proportional to the wavelength of the wave

the amplitude of vibration is always zero

two equal waves are travelling in opposite directions Juist antwoord

the waves are longitudinal

the frequency is directly proportional to the length of the string

Antwoorddetails

Bekijk antwoord

Vraag 29 Verslag

In order to convert a galvanometer into an ammeter

a low resistance shunt is connected in parallel Juist antwoord

a low resistance shunt is connected in series

a medium resistance shunt is connected in series

a high resistance shunt is connected in parallel

a high resistance shunt is connected in series

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lees lesnotitie op Motion (JAMB)

Current Electricity

Properties Of Waves: Reflection, Refraction, Diffraction

Motion

Bekijk antwoord

Vraag 30 Verslag

The electric supply from Kainji Dam is transmitted at high voltages of the order hundreds of kilovolts but is converted to domestic use of about 220 volts by

commutators

transistors

valves and diodes

rectifiers

transformers Juist antwoord

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Simple A.C Circuits (JAMB)

Current Electricity

Simple A.C Circuits

Bekijk antwoord

Vraag 31 Verslag

A herdsman yelling out to fellow herdsman heard his voice reflected by cliff 4s later. What is the velocity of sound in air if the cliff is 680m away?

170ms^-1

136ms^-1

340ms^-1 Juist antwoord

680ms^-1

510ms^-1

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 32 Verslag

The amount of heat required to raise the temperature of a body is

Thermal energy Juist antwoord

thermal conduction

heat loss

specific heat capacity

thermal capacity

Antwoorddetails

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Bekijk antwoord

Vraag 33 Verslag

A machine gun with a mass of 5kg fires a 50g bullet at speed of 100ms^-1. The recoil speed of the machine gun is

0.5 msec^-1

1.5 msec^-1

1 msec^-1 Juist antwoord

2 msec^-1

4 msec^-1

Antwoorddetails

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

Newton’s Laws Of Motion

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Vraag 34 Verslag

A potential difference of 6v is used to produce a current of 5A for 200s through a heating coil. The heat produced is

4800 cal

6000 cal

2400J

240k cal

6000J Juist antwoord

Antwoorddetails

Lees lesnotitie op Current Electricity (JAMB)

Lees lesnotitie op Electrical Energy And Power (JAMB)

Current Electricity

Electrical Energy And Power

Bekijk antwoord

Vraag 35 Verslag

A solid suspended by a piece of string is completely immersed in water. On attempting to lift the solid out of the water, the string breaks when the solid is partly out of the water. This is because

the tension in the string decreases as the solid is lifted

the mass of the solid has increased

the solid apparently weighs less when completely immersed in water than when partially immersed Juist antwoord

part of the solid still in water is exerting more force on the string

the solid is no longer in equilibrium with water

Antwoorddetails

Lees lesnotitie op Gravitational Field (WAEC)

Lees lesnotitie op Speed And Velocity (WAEC)

Gravitational Field

Speed And Velocity

Bekijk antwoord

Vraag 36 Verslag

a guitar string is 75cm long. the wavelength of its fundamental note is

75cm

150cm Juist antwoord

37.5cm

112cm

50cm

Antwoorddetails

Bekijk antwoord

Vraag 37 Verslag

Of the following which is different from the other?

x-rays

gamma-rays

cathode rays Juist antwoord

ultra violet rays

infrared rays

Antwoorddetails

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

Lees lesnotitie op Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

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

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

Lees lesnotitie op Types Of Waves (WAEC)

Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum

Properties Of Waves: Reflection, Refraction, Diffraction

Structure Of The Atom (Nigeria Only)

Electromagnetic Field (Part 2)

Types Of Waves

Bekijk antwoord

Vraag 38 Verslag

On an a.c generator, which of the following does not apply?

field magnet

commutator Juist antwoord

armature

slip rings

carbon brushes

Antwoorddetails

Lees lesnotitie op Capacitors (JAMB)

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

Lees lesnotitie op Simple A.C Circuits (JAMB)

Capacitors

Simple A.C. Circuits

Simple A.C Circuits

Bekijk antwoord

Vraag 39 Verslag

An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror, the number of images formed is

3 Juist antwoord

Antwoorddetails

Bekijk antwoord

Vraag 40 Verslag

In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is

10 ohms

1 ohms

zero

20 ohms

infinite Juist antwoord

Antwoorddetails

Lees lesnotitie op Capacitors (JAMB)

Lees lesnotitie op Simple A.C Circuits (JAMB)

Capacitors

Simple A.C Circuits

Bekijk antwoord

Vraag 41 Verslag

A few grains of table salt were put in a cup of water, kept at constant temperature and left undisturbed. Eventually all the water tasted salty. The action is due to

convection

osmosis

capillarity

diffusion Juist antwoord

conductivity

Antwoorddetails

Lees lesnotitie op Scalars And Vectors (JAMB)

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Scalars And Vectors

Temperature And Its Measurement

Bekijk antwoord

Vraag 42 Verslag

For the correction of myopic defects in the human eye we require

a convex lens

a concave lens Juist antwoord

a combination of concave and convex lenses

a prism

a concave mirror

Antwoorddetails

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

Structure Of The Atom (Nigeria Only)

Bekijk antwoord

Vraag 43 Verslag

A temperature 20^oC is the same as

36^oF

60^oF Juist antwoord

11.1^oF

43.1^oF

25^oF

Antwoorddetails

Lees lesnotitie op Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

Bekijk antwoord

Vraag 44 Verslag

The angular dispersion of a prism depends on

the index of refraction only Juist antwoord

the angle of incidence as well as the index of refraction

the angle of incidence only

the thickness of the prism

the prism angle

Antwoorddetails

Lees lesnotitie op Electrostatics (JAMB)

Electrostatics

Bekijk antwoord

Vraag 45 Verslag

An air force jet flying with a speed of 335ms-1 went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired?

838m

3350m

670m

1675m Juist antwoord

67m

Antwoorddetails

Lees lesnotitie op Motion (JAMB)

Motion

Bekijk antwoord

Vraag 46 Verslag

If NEPA charges 5k per kWhr, what is the cost of operating for 24 hours a lamp required 1A on a 200v line?

24k Juist antwoord

55k

40k

26k

32k

Antwoorddetails

Bekijk antwoord

Vraag 47 Verslag

An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit from each mirror. The number of images formed is