JAMB UTME - Physics - 1978 | Green Bridge CBT

Swali 1 Ripoti

The angular dispersion of a prism depends on

the index of refraction only Jibu sahihi

the angle of incidence as well as the index of refraction

the angle of incidence only

the thickness of the prism

the prism angle

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 2 Ripoti

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

Ib, ft, sec

g, m, sec

kg, m, sec Jibu sahihi

cm, g, sec

kg, cm, sec

Maelezo ya Majibu

Soma maelezo ya somo kwenye Fundamental And Derived Quantities And Units (WAEC)

Fundamental And Derived Quantities And Units

Tazama Jibu

Swali 3 Ripoti

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 Jibu sahihi

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

2km N 75^oE

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

Soma maelezo ya somo kwenye Position, Distance And Displacement (WAEC)

Scalars And Vectors

Position, Distance And Displacement

Tazama Jibu

Swali 4 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Tazama Jibu

Swali 5 Ripoti

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

field magnet

commutator Jibu sahihi

armature

slip rings

carbon brushes

Maelezo ya Majibu

Soma maelezo ya somo kwenye Capacitors (JAMB)

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

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

Capacitors

Simple A.C. Circuits

Simple A.C Circuits

Tazama Jibu

Swali 6 Ripoti

A temperature 20^oC is the same as

36^oF

60^oF Jibu sahihi

11.1^oF

43.1^oF

25^oF

Maelezo ya Majibu

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

Temperature And Its Measurement

Tazama Jibu

Swali 7 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Gravitational Field (JAMB)

Gravitational Field

Tazama Jibu

Swali 8 Ripoti

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

a convex lens

a concave lens Jibu sahihi

a combination of concave and convex lenses

a prism

a concave mirror

Maelezo ya Majibu

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

Structure Of The Atom (Nigeria Only)

Tazama Jibu

Swali 9 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Refraction Of Light Through Plane And Curved Surfaces (JAMB)

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

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

Refraction Of Light Through Plane And Curved Surfaces

Properties Of Waves: Reflection, Refraction, Diffraction

Electromagnetic Field (Part 2)

Tazama Jibu

Swali 10 Ripoti

Two lamps are rated 40W and 220V each are connected in series. The total power dissipated in both lamps is

10W

20W

40W

80W Jibu sahihi

None of the above

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

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

Current Electricity

Simple A.C Circuits

Tazama Jibu

Swali 11 Ripoti

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

75cm

150cm Jibu sahihi

37.5cm

112cm

50cm

Maelezo ya Majibu

Tazama Jibu

Swali 12 Ripoti

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

Thermal energy Jibu sahihi

thermal conduction

heat loss

specific heat capacity

thermal capacity

Maelezo ya Majibu

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

Temperature And Its Measurement

Tazama Jibu

Swali 13 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

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

Current Electricity

Simple A.C Circuits

Tazama Jibu

Swali 14 Ripoti

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 Jibu sahihi

iii and iv only

iv and v only

iii, iv and v only

Maelezo ya Majibu

Soma maelezo ya somo kwenye Position, Distance And Displacement (WAEC)

Soma maelezo ya somo kwenye Vapours (JAMB)

Soma maelezo ya somo kwenye Pressure (JAMB)

Position, Distance And Displacement

Vapours

Pressure

Tazama Jibu

Swali 15 Ripoti

In order to convert a galvanometer into an ammeter

a low resistance shunt is connected in parallel Jibu sahihi

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Current Electricity (JAMB)

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

Soma maelezo ya somo kwenye Motion (JAMB)

Current Electricity

Properties Of Waves: Reflection, Refraction, Diffraction

Motion

Tazama Jibu

Swali 16 Ripoti

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 Jibu sahihi

24A

10A

Maelezo ya Majibu

Soma maelezo ya somo kwenye Capacitors (JAMB)

Soma maelezo ya somo kwenye Current Electricity (JAMB)

Soma maelezo ya somo kwenye Concepts Of Matter (WAEC)

Capacitors

Current Electricity

Concepts Of Matter

Tazama Jibu

Swali 17 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Friction (JAMB)

Soma maelezo ya somo kwenye Pressure (JAMB)

Friction

Pressure

Tazama Jibu

Swali 18 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Characteristics Of Sound Waves (JAMB)

Soma maelezo ya somo kwenye Pressure (JAMB)

Soma maelezo ya somo kwenye Measurements And Units (JAMB)

Characteristics Of Sound Waves

Pressure

Measurements And Units

Tazama Jibu

Swali 19 Ripoti

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 Jibu sahihi

6 x 10^-3

0.6

Maelezo ya Majibu

Soma maelezo ya somo kwenye Elasticity (JAMB)

Elasticity

Tazama Jibu

Swali 20 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Refraction Of Light Through Plane And Curved Surfaces

Tazama Jibu

Swali 21 Ripoti

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

24k Jibu sahihi

55k

40k

26k

32k

Maelezo ya Majibu

Tazama Jibu

Swali 22 Ripoti

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

less than R₁ Jibu sahihi

greater than R₂

the sum of R₁ and R₂

the difference of R₂ and R₁

greater thanR₁ but less than R₂

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 23 Ripoti

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 Jibu sahihi

680ms^-1

510ms^-1

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 24 Ripoti

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 Jibu sahihi

67m

Maelezo ya Majibu

Soma maelezo ya somo kwenye Motion (JAMB)

Motion

Tazama Jibu

Swali 25 Ripoti

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 Jibu sahihi

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Friction (JAMB)

Soma maelezo ya somo kwenye Fluid At Rest (WAEC)

Friction

Fluid At Rest

Tazama Jibu

Swali 26 Ripoti

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

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

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

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

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

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

Tazama Jibu

Swali 27 Ripoti

Of the following which is different from the other?

x-rays

gamma-rays

cathode rays Jibu sahihi

ultra violet rays

infrared rays

Maelezo ya Majibu

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

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

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

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

Soma maelezo ya somo kwenye 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

Tazama Jibu

Swali 28 Ripoti

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 Jibu sahihi

the waves are longitudinal

the frequency is directly proportional to the length of the string

Maelezo ya Majibu

Tazama Jibu

Swali 29 Ripoti

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 Jibu sahihi

the voltage supply can be stabilized

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 30 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Time (WAEC)

Soma maelezo ya somo kwenye Measurements And Units (JAMB)

Time

Measurements And Units

Tazama Jibu

Swali 31 Ripoti

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 Jibu sahihi

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

the solid is no longer in equilibrium with water

Maelezo ya Majibu

Soma maelezo ya somo kwenye Gravitational Field (WAEC)

Soma maelezo ya somo kwenye Speed And Velocity (WAEC)

Gravitational Field

Speed And Velocity

Tazama Jibu

Swali 32 Ripoti

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 Jibu sahihi

none of the above is correct

Maelezo ya Majibu

Soma maelezo ya somo kwenye Sound Waves (WAEC)

Soma maelezo ya somo kwenye Refraction Of Light Through Plane And Curved Surfaces (JAMB)

Soma maelezo ya somo kwenye Propagation Of Sound Waves (JAMB)

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Sound Waves

Refraction Of Light Through Plane And Curved Surfaces

Propagation Of Sound Waves

Electrostatics

Tazama Jibu

Swali 33 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Tazama Jibu

Swali 34 Ripoti

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 Jibu sahihi

400 cal

Maelezo ya Majibu

Soma maelezo ya somo kwenye Quantity Of Heat (JAMB)

Quantity Of Heat

Tazama Jibu

Swali 35 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Capacitors (JAMB)

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

Capacitors

Simple A.C Circuits

Tazama Jibu

Swali 36 Ripoti

In The Diagram, what is the value of W?

10N Jibu sahihi

15N

20N

30N

Maelezo ya Majibu

Tazama Jibu

Swali 37 Ripoti

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 Jibu sahihi

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

Maelezo ya Majibu

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

Structure Of The Atom (Nigeria Only)

Tazama Jibu

Swali 38 Ripoti

The angular dispersion of a prism depends on

the index of refraction only Jibu sahihi

the angle of incidence as well as the index of refraction

the angle of incidence only

the thickness of the prism

the prism angle

Maelezo ya Majibu

Tazama Jibu

Swali 39 Ripoti

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 Jibu sahihi

all of the above

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 40 Ripoti

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 Jibu sahihi

Maelezo ya Majibu

Tazama Jibu

Swali 41 Ripoti

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 Jibu sahihi

none of these is correct

Maelezo ya Majibu

Soma maelezo ya somo kwenye Electrostatics (JAMB)

Electrostatics

Tazama Jibu

Swali 42 Ripoti

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 Jibu sahihi

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

Maelezo ya Majibu

Soma maelezo ya somo kwenye Light Energy (JAMB)

Light Energy

Tazama Jibu

Swali 43 Ripoti

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 Jibu sahihi

none of the above

Maelezo ya Majibu

Soma maelezo ya somo kwenye Magnets And Magnetic Fields (JAMB)

Magnets And Magnetic Fields

Tazama Jibu

Swali 44 Ripoti

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 Jibu sahihi

conductivity

Maelezo ya Majibu

Soma maelezo ya somo kwenye Scalars And Vectors (JAMB)

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

Scalars And Vectors

Temperature And Its Measurement

Tazama Jibu

Swali 45 Ripoti

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 Jibu sahihi

ii, iii and vi

i, iii and vi

i, iii and v

i, iv and v

Maelezo ya Majibu

Soma maelezo ya somo kwenye Friction (JAMB)

Soma maelezo ya somo kwenye Quantity Of Heat (JAMB)

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

Friction

Quantity Of Heat

Temperature And Its Measurement