JAMB UTME - Physics - 1978 | Green Bridge CBT

Frage 1 Bericht

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 Richtige Antwort

conductivity

Antwortdetails

Lies die Unterrichtsnotiz zu Scalars And Vectors (JAMB)

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Scalars And Vectors

Temperature And Its Measurement

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Frage 2 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Lies die Unterrichtsnotiz zu Electrical Energy And Power (JAMB)

Current Electricity

Electrical Energy And Power

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Frage 3 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Friction (JAMB)

Lies die Unterrichtsnotiz zu Pressure (JAMB)

Friction

Pressure

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Frage 4 Bericht

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

field magnet

commutator Richtige Antwort

armature

slip rings

carbon brushes

Antwortdetails

Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Simple A.C. Circuits (WAEC)

Lies die Unterrichtsnotiz zu Simple A.C Circuits (JAMB)

Capacitors

Simple A.C. Circuits

Simple A.C Circuits

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Frage 5 Bericht

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

Thermal energy Richtige Antwort

thermal conduction

heat loss

specific heat capacity

thermal capacity

Antwortdetails

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Frage 6 Bericht

The angular dispersion of a prism depends on

the index of refraction only Richtige Antwort

the angle of incidence as well as the index of refraction

the angle of incidence only

the thickness of the prism

the prism angle

Antwortdetails

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 7 Bericht

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 Richtige Antwort

67m

Antwortdetails

Lies die Unterrichtsnotiz zu Motion (JAMB)

Motion

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Frage 8 Bericht

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 Richtige Antwort

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

Antwortdetails

Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Frage 9 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

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Frage 10 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Simple A.C Circuits (JAMB)

Capacitors

Simple A.C Circuits

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Frage 11 Bericht

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 Richtige Antwort

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

2km N 75^oE

Antwortdetails

Lies die Unterrichtsnotiz zu Scalars And Vectors (JAMB)

Lies die Unterrichtsnotiz zu Position, Distance And Displacement (WAEC)

Scalars And Vectors

Position, Distance And Displacement

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Frage 12 Bericht

The equivalent capacitance for the circuit drawn above is

18µf

4µf Richtige Antwort

2µf

12µf

13µf

Antwortdetails

Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Capacitors

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Frage 13 Bericht

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

75cm

150cm Richtige Antwort

37.5cm

112cm

50cm

Antwortdetails

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Frage 14 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Lies die Unterrichtsnotiz zu Simple A.C Circuits (JAMB)

Current Electricity

Simple A.C Circuits

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Frage 15 Bericht

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 Richtige Antwort

the voltage supply can be stabilized

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

Antwortdetails

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 16 Bericht

In order to convert a galvanometer into an ammeter

a low resistance shunt is connected in parallel Richtige Antwort

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

Antwortdetails

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Lies die Unterrichtsnotiz zu Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lies die Unterrichtsnotiz zu Motion (JAMB)

Current Electricity

Properties Of Waves: Reflection, Refraction, Diffraction

Motion

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Frage 17 Bericht

Of the following which is different from the other?

x-rays

gamma-rays

cathode rays Richtige Antwort

ultra violet rays

infrared rays

Antwortdetails

Lies die Unterrichtsnotiz zu Electromagnetic Waves: Types Of Radiation In Electromagnetic Spectrum (WAEC)

Lies die Unterrichtsnotiz zu Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 2) (WAEC)

Lies die Unterrichtsnotiz zu 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

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Frage 18 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Time (WAEC)

Lies die Unterrichtsnotiz zu Measurements And Units (JAMB)

Time

Measurements And Units

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Frage 19 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Lies die Unterrichtsnotiz zu Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)

Lies die Unterrichtsnotiz zu Electromagnetic Field (Part 2) (WAEC)

Refraction Of Light Through Plane And Curved Surfaces

Properties Of Waves: Reflection, Refraction, Diffraction

Electromagnetic Field (Part 2)

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Frage 20 Bericht

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 Richtige Antwort

Antwortdetails

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Frage 21 Bericht

A temperature 20^oC is the same as

36^oF

60^oF Richtige Antwort

11.1^oF

43.1^oF

25^oF

Antwortdetails

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Temperature And Its Measurement

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Frage 22 Bericht

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

3 Richtige Antwort

Antwortdetails

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Frage 23 Bericht

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 Richtige Antwort

Antwortdetails

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Frage 24 Bericht

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 Richtige Antwort

680ms^-1

510ms^-1

Antwortdetails

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 25 Bericht

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 Richtige Antwort

all of the above

Antwortdetails

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 26 Bericht

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 Richtige Antwort

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

Antwortdetails

Lies die Unterrichtsnotiz zu Friction (JAMB)

Lies die Unterrichtsnotiz zu Fluid At Rest (WAEC)

Friction

Fluid At Rest

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Frage 27 Bericht

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 Richtige Antwort

none of the above is correct

Antwortdetails

Lies die Unterrichtsnotiz zu Sound Waves (WAEC)

Lies die Unterrichtsnotiz zu Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Lies die Unterrichtsnotiz zu Propagation Of Sound Waves (JAMB)

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Sound Waves

Refraction Of Light Through Plane And Curved Surfaces

Propagation Of Sound Waves

Electrostatics

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Frage 28 Bericht

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 Richtige Antwort

1.18 PN-m^-2

2.85 PN-m^-2

Antwortdetails

Lies die Unterrichtsnotiz zu Quantity Of Heat (JAMB)

Quantity Of Heat

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Frage 29 Bericht

The latent heat of fusion of ice is 80cal g^-1. How much heat is required to change 10g of ice at Q^oC into water at the same temperature?

80 cal

10 cal

8 cal

800 cal Richtige Antwort

400 cal

Antwortdetails

Lies die Unterrichtsnotiz zu Quantity Of Heat (JAMB)

Quantity Of Heat

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Frage 30 Bericht

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

Ib, ft, sec

g, m, sec

kg, m, sec Richtige Antwort

cm, g, sec

kg, cm, sec

Antwortdetails

Lies die Unterrichtsnotiz zu Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

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Frage 31 Bericht

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 Richtige Antwort

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

the solid is no longer in equilibrium with water

Antwortdetails

Lies die Unterrichtsnotiz zu Gravitational Field (WAEC)

Lies die Unterrichtsnotiz zu Speed And Velocity (WAEC)

Gravitational Field

Speed And Velocity

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Frage 32 Bericht

In The Diagram, what is the value of W?

10N Richtige Antwort

15N

20N

30N

Antwortdetails

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Frage 33 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Gravitational Field (JAMB)

Gravitational Field

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Frage 34 Bericht

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 Richtige Antwort

ii, iii and vi

i, iii and vi

i, iii and v

i, iv and v

Antwortdetails

Lies die Unterrichtsnotiz zu Friction (JAMB)

Lies die Unterrichtsnotiz zu Quantity Of Heat (JAMB)

Lies die Unterrichtsnotiz zu Temperature And Its Measurement (JAMB)

Friction

Quantity Of Heat

Temperature And Its Measurement

Antwort anzeigen

Frage 35 Bericht

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 Richtige Antwort

none of these is correct

Antwortdetails

Lies die Unterrichtsnotiz zu Electrostatics (JAMB)

Electrostatics

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Frage 36 Bericht

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 Richtige Antwort

24A

10A

Antwortdetails

Lies die Unterrichtsnotiz zu Capacitors (JAMB)

Lies die Unterrichtsnotiz zu Current Electricity (JAMB)

Lies die Unterrichtsnotiz zu Concepts Of Matter (WAEC)

Capacitors

Current Electricity

Concepts Of Matter

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Frage 37 Bericht

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 Richtige Antwort

the waves are longitudinal

the frequency is directly proportional to the length of the string

Antwortdetails

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Frage 38 Bericht

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

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

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

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

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

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

Antwortdetails

Lies die Unterrichtsnotiz zu Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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Frage 39 Bericht

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 Richtige Antwort

Antwortdetails

Lies die Unterrichtsnotiz zu Characteristics Of Sound Waves (JAMB)

Lies die Unterrichtsnotiz zu Pressure (JAMB)

Lies die Unterrichtsnotiz zu Measurements And Units (JAMB)

Characteristics Of Sound Waves

Pressure

Measurements And Units

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Frage 40 Bericht

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

less than R₁ Richtige Antwort

greater than R₂

the sum of R₁ and R₂

the difference of R₂ and R₁

greater thanR₁ but less than R₂

Antwortdetails

Lies die Unterrichtsnotiz zu Scalars And Vectors (JAMB)

Lies die Unterrichtsnotiz zu Equilibrium Of Forces (WAEC)

Scalars And Vectors

Equilibrium Of Forces

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Frage 41 Bericht

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

a convex lens

a concave lens Richtige Antwort

a combination of concave and convex lenses

a prism

a concave mirror

Antwortdetails

Lies die Unterrichtsnotiz zu Structure Of The Atom (Nigeria Only) (WAEC)

Structure Of The Atom (Nigeria Only)

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Frage 42 Bericht

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 Richtige Antwort

2 msec^-1

4 msec^-1

Antwortdetails

Lies die Unterrichtsnotiz zu Newton’s Laws Of Motion (WAEC)

Newton’s Laws Of Motion

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Frage 43 Bericht

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 Richtige Antwort

iii and iv only

iv and v only

iii, iv and v only

Antwortdetails

Lies die Unterrichtsnotiz zu Position, Distance And Displacement (WAEC)

Lies die Unterrichtsnotiz zu Vapours (JAMB)

Lies die Unterrichtsnotiz zu Pressure (JAMB)

Position, Distance And Displacement

Vapours

Pressure