Physics Online Quiz Test 01

Here is the list of Free Physics Quiz Test 01 with answers for the Preparation of Competitive Exams in FPSC, PPSC, SPSCKPPSC, CSS, PMS, NTS, ISSB, LAT, etc. This Physics Quiz with Answers will help you to secure maximum marks in upcoming academic as well as competitive exams in Pakistan

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Physics Online Quizzes

Free Physics Quiz Test 01 test contains multiple-choice questions with answers for competitive exam preparation. We have provided Free Physics online quizzes below which include questions related to different topics.

Youth For Pakistan has provided an excellent opportunity for the students to prepare for their Physics Quizzes online test. These Online Online Quizzes cover all the topics and provide wide knowledge to clear their Physics subject.

Free Physics Quiz Test 01

A body is moving with uniform velocity. Its?
(A) speed changes
(B) acceleration changes
(C) direction of motion changes
(D) displacement from origin changes

Answer
displacement from origin changes

Why Ballistic missile fails in some circumstances of precision?
(A) due to their shape
(B) due to angle of projection
(C) due to air resistance
(D) all of these

Answer
due to air resistance

Time rate of change of momentum is equal to?
(A) force
(B) impulse
(C) velocity
(D) both A and C

Answer
force

At which angle the range of the projectile is maximum?
(A) 45
(B) 60
(C) 30
(D) 65

Answer
45

Flight of a rocket in the space is an example of?
(A) second law of motion
(B) third law of motion
(C) first law of motion
(D) law of gravitation

Answer
third law of motion

Distance covered by a freely falling body in 2 seconds will be?
(A) 4.9 m
(B) 39.2 m
(C) 19.6 m
(D) 44.1 m

Answer
19.6 m

What is the angle of projection for which the range and maximum height become equal?
(A) tan-1 ¼
(B) tan-1 4
(C) tan-1 ½
(D) tan-1 2

Answer
tan-1 4

Taking off rocket can be explained by?
(A) 1st law of motion
(B) 2nd law of motion
(C) Law of conservation of momentum
(D) law of conservation of energy

Answer
Law of conservation of momentum

Which shows the correct relation between time of flight T and maximum height H?
(A) H=8T2/g
(B) H=gT2
(C) H=gT2/8
(D) H=8g/T2

Answer
H=gT2/8

What is the shape of velocity, time graph for constant acceleration?
(A) straight inclined line.
(B) parabola
(C) inclined curve
(D) declined curve

Answer
straight inclined line.

When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to
(A) Centripetal force
(B) Gravitational force
(C) Their inertia
(D) Centrifugal force

Answer
Centrifugal force

The collision between two bodies be elastic if bodies are?
(A) solid and soft
(B) soft and elastic
(C) solid and hard
(D) hard and elastic

Answer
solid and hard

Which of the following pair has same direction always?
(A) force, displacement
(B) force, velocity
(C) force, acceleration
(D) force, momentum

Answer
force, acceleration

The dimension of force is?
(A) MLT-2
(B) ML2T-2
(C) ML2T2
(D) ML-2T-2

Answer
MLT-2

3rd law of motion explains?
(A) effect of force
(B) existence of a force
(C) existence of two forces
(D) existence of pair of forces in nature

Answer
existence of pair of forces in nature

1st law of motion gives the definition of?
(A) rest
(B) motion
(C) velocity
(D) force

Answer
force

Inertia of an object is quantitative measure of its?
(A) volume
(B) density
(C) mass
(D) temperature

Answer
mass

Instantaneous and average velocities become equal when body?
(A) has zero acceleration
(B) has uniform acceleration
(C) has variable acceleration
(D) moves in a circle

Answer
has zero acceleration

Area under velocity time graph represent?
(A) force
(B) displacement
(C) distance
(D) acceleration

Answer
displacement

A man is in a car is moving with velocity of 36km/hr. His speed with respect to the car is?
(A) 10m/s
(B) 36m/s
(C) zero
(D) infinite

Answer
zero

When body is in motion, ____________ always changes?
(A) its velocity
(B) its acceleration
(C) its position vector
(D) its momentum

Answer
its position vector

linear expansion occurs in?
(A) liquid
(B) solid
(C) both
(D) None of these

Answer
solid

The unit of coefficient of linear expansion or volume expansion is?
(A) K
(B) K-1
(C) K -2
(D) K -4

Answer
K-1

The co efficient of linear expansion is equal to?
(A) ?L = ?L?T
(B) ?L/L?T
(C) L?T/?L
(D) ?L?T-?L

Answer
?L = ?L?T

The formula of inter-conversion of centigrade and Fahrenheit scale is?
(A) c-32/9
(B) f -32/9 =c/5
(C) f-32/9=c/9
(D) f-32/10=c/10

Answer
f -32/9 =c/5

Name the branch of science which deals with the study of sound and sound waves?
(A) Aeronautics
(B) Acoustics
(C) Aerostatics
(D) Aetiology

Answer
Acoustics

Which one of the following is massless?
(A) Proton
(B) Electron
(C) Neutron
(D) Photon

Answer
Photon

The first book of Physics was written by?
(A) Kelvin
(B) Newton
(C) Aristotle
(D) Faraday

Answer
Aristotle

Study of living science relates with?
(A) Physical science
(B) Biological science
(C) Just living science
(D) Organ science

Answer
Biological science

The physics of moving charge particles is known as?
(A) Plasma physics
(B) Electro-statics
(C) Electro-magnetic
(D) Electro-dynamics

Answer
Electro-dynamics

When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to?
(A) Centripetal force
(B) Gravitational force
(C) Their inertia
(D) Centrifugal force

Answer
Centrifugal force

The collision between two bodies be elastic if bodies are?
(A) Solid and soft
(B) soft and elastic
(C) solid and hard
(D) hard and elastic

Answer
solid and hard

The dimension of force is?
(A) MLT-2
(B) ML2T-2
(C) ML2T2
(D) ML-2T-2

Answer
MLT-2

3rd law of motion explains?
(A) effect of force
(B) existence of a force
(C) existence of two forces
(D) existence of pair of forces in nature

Answer
existence of pair of forces in nature

1st law of motion gives the definition of?
(A) rest
(B) motion
(C) velocity
(D) force

Answer
force

Inertia of an object is quantitative measure of its?
(A) volume
(B) density
(C) mass
(D) temperature

Answer
mass

Instantaneous and average velocities become equal when body?
(A) has zero acceleration
(B) has uniform acceleration
(C) has variable acceleration
(D) moves in a circle

Answer
has zero acceleration

Area under velocity time graph represent?
(A) force
(B) displacement
(C) distance
(D) acceleration

Answer
displacement

A simple microscope consists of which lenses?
(A) a long-focus concave lens
(B) a short-focus concave lens
(C) a short-focus convex lens
(D) a long-focus convex lens

Answer
a short-focus convex lens

Which of the following Radio frequencies are used around the world in air navigational system?
(A) Very Low Frequency (VLF)
(B) Very High Frequency (VHF)
(C) Ultra High Frequency (UHF)
(D) None of these

Answer
Very High Frequency (VHF)

Due to which of the following phenomena, the colored glass appears white when crushed into fine powder?
(A) Total Internal Reflection
(B) Diffraction
(C) Scattering
(D) Refraction

Answer
Scattering

Electron microscope works on which of the following principles?
(A) Optical interference
(B) Wave Nature of electrons
(C) Motion of a charged particle in electromagnetic fields
(D) Faraday’s law of Electromagnetic induction

Answer
Wave Nature of electrons

Which of the following is the unit of Impulse?
(A) N
(B) Ns
(C) N/s
(D) N/s2

Answer
Ns

What is the time taken by the earth to complete one rotation about its axis with regard to a fixed star?
(A) Sidereal day
(B) Solar day
(C) Tropical year
(D) None of these

Answer
Sidereal day

Which temperature scale is based upon absolute zero?
(A) Celsius
(B) Fahrenheit
(C) Kelvin
(D) Rankine

Answer
Kelvin

1 femto metre is equal to how many metres?
(A) 10-12
(B) 10-14
(C) 10-15
(D) 1-24

Answer
10-15

Joule/kg is the S.I unit of which of these physical quantities?
(A) Entropy
(B) Permittivity of free space
(C) Latent heat
(D) Gas constant

Answer
Latent heat

The magnitude of the resultant of two vectors is maximum in which of the following case?
(A) when vectors act in the same direction
(B) when vectors act in the opposite direction
(C) when vectors act at 90° to each other
(D) None of these

Answer
when vectors act in the same direction

Which Statment is correct about Kinetic energy during the projectile motion?
(A) it is minimum at the point of projection
(B) it is minimum at the highest point
(C) it is maximum at the highest point
(D) it is minimum at the point of reaching the ground

Answer
it is minimum at the highest point

What is the maximum height that can be attained by a projectile?
(A) equal to its maximum range
(B) one half of its maximum range
(C) one-fourth of its maximum range
(D) twice of its maximum range

Answer
one-fourth of its maximum range

What is the apparent weight of the person when the elevator is accelerating downwards?
(A) equal to the actual weight
(B) greater than the actual weight
(C) less than the actual weight
(D) Zero

Answer
less than the actual weight

The thrust on the rocket is
(A) in the same direction as the rocket
(B) in the opposite direction of the rocket
(C) at 90° to the direction of the rocket
(D) None of these

Answer
in the opposite direction of the rocket

Work done is defined as the dot product of
(A) Force and acceleration
(B) Force and area
(C) Force and instantaneous velocity
(D) Force and displacement

Answer
Force and displacement

What is the dimensional formula of work done?
(A) M1 L1 T-1
(B) M1 L2 T-1
(C) M1 L-1 T-2
(D) M1 L2 T-2

Answer
M1 L2 T-2

The value of acceleration due to gravity is minimum on which of these planets?
(A) Mars
(B) Jupiter
(C) Neptune
(D) Mercury

Answer
Mercury

What is the orbital velocity of a satellite orbiting very close to the surface of earth?
(A) 7.92 km/s
(B) 9.8 km/s
(C) 11.2 km/s
(D) 14.8 km/s

Answer
7.92 km/s

By how much the orbital velocity of Moon has to increase for it to cease to remain the earth’s satellite?
(A) 2 times
(B) 3 times
(C) ?2 times
(D) ?3 times

Answer
?2 times

What is the stress known as when there is a relative displacement between various layers of solid?
(A) Tangential
(B) Linear
(C) Lateral
(D) Longitudinal

Answer
Tangential

Who was develop Wave theory of light
(A) Issac Newton
(B) Ole Romer
(C) Huygens Dutch
(D) Simon Stevinus

Answer
Huygens Dutch

Who determines Gravitational Constant and Mass of Earth?
(A) Benjamin Thomson
(B) William Herschel
(C) Henry Cavendish
(D) Thomas Young

Answer
Henry Cavendish

S.I Unit of Current is
(A) Fathom
(B) Volt
(C) Ampere
(D) None of these

Answer
Ampere

Light Year is the Unit of
(A) Galaxy
(B) Distance
(C) Time
(D) None of these

Answer
Distance

From the following which is not true about LASER?
(A) The emitted LASER light is notable for its high degree of dispersive power unattainable using other technologies
(B) A Laser is a device that emits light through a process of optical amplification
(C) A Laser beams can be focused to very tiny spots achieving a very high irradiance
(D) A Laser light is used in bar code scanners

Answer
The emitted LASER light is notable for its high degree of dispersive power unattainable using other technologies

The degree of hotness or coldness of an object is expressed in terms of
(A) Heat Capacity
(B) Heat
(C) Temperature
(D) None of these

Answer
Temperature

Which of the following properties of matter is used in the construction of a thermometer?
(A) Expansion of matter on heating
(B) Change of color with temperature
(C) Increase of resistance with rising of temperature
(D) All of the above

Answer
Expansion of matter on heating

Mercury is used in mercury-in-glass thermometer as a thermometric substance because
(A) It does not wet the capillary tube walls
(B) It is opaque
(C) Its expansion is uniform over a wide range of temperature
(D) All of the above

Answer
All of the above

Which thermometric property is used in Liquid in glass thermometers?
(A) Color Change on Heating
(B) Resistance Change on Heating
(C) Thermal Expansion
(D) None of these

Answer
Thermal Expansion

A Centigrade degree is greater than Fahrenheit by
(A) 9/5
(B) 5/9
(C) 17/5
(D) 18/8

Answer
9/5

The lower and upper fixed points on Celsius (centigrade) scale are taken to be
(A) 32° and 273°
(B) 0° and 212°
(C) 0° and 100°
(D) None of these

Answer
0° and 100°

The temperature scales Centigrade and Fahrenheit have the same reading at
(A) 140°
(B) -43°
(C) -40°
(D) 50°

Answer
-40°

The normal temperature of the human body is 37 C°. On Kelvin scale, it is equal to:
(A) 373 K
(B) 273 K
(C) 310 K
(D) 236 K

Answer
310 K

One degree of temperature scale centigrade (Celsius) is equal to Fahrenheit?
(A) 1° of Fahrenheit
(B) 1.8° of Fahrenheit
(C) 32° of Fahrenheit
(D) 3.5° of Fahrenheit

Answer
1.8° of Fahrenheit

Which of the following temperature on the Fahrenheit scale corresponds to absolute zero?
(A) 212° F
(B) 60°F
(C) -450° F
(D) -460° F

Answer
-460° F

Absolute zero is considered to be the temperature at which
(A) All gases become liquids
(B) Water freezes
(C) Molecular motion in gases would cease
(D) All liquids become gases

Answer
All gases become liquids

The temperature scales Kelvin and Fahrenheit show the same reading at what temperature?
(A) -57.37°
(B) 5.74.20°
(C) 574.25 °
(D) -574.25°

Answer
-574.25°

The average K.E of all the molecules in a substance is a measure of the following?
(A) Boiling Point
(B) Heat Energy
(C) Temperature
(D) Specific Heat

Answer
Temperature

The SI unit of Capacitance is
(A) Newton
(B) Farad
(C) Joule
(D) Capability

Answer
Farad

Concept of electric field theory was introduced by which of the following Scientists?
(A) Dalton
(B) Michael Faraday
(C) Kepler
(D) Nelson Mandela

Answer
Michael Faraday

Which of the following law governs the force between electric charges?
(A) Ohms law
(B) Newtons law
(C) Coulombs law
(D) Amperes law

Answer
Coulombs law

When the distance between two charged particles is halved, the force between them becomes
(A) Remain Same
(B) Double
(C) Four Times
(D) One – Half

Answer
Four Times

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