Physics Mcqs For CSS, PPSC, NTS, FPSC Test

These Physics Mcqs are very important for all tests conducted by the FPSC test, NTS test, PPSC test, SSPC test, and other testing agencies of Pakistan. Here is the list of latest Physics MCQs for the preparation of the Government Jobs in Pakistan text exam.

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The SI unit of Heat is________?

A. Watt
B. Volt
C. Joule
D. Newton

Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?

A. 2.5
B. 2.0
C. 1.75
D. 1.5
E. 1.25

The branch of science which deals with the properties of matter and energy is called__________?

A. Biology
B. Geography
C. Physics
D. Chemistry

Physics is one of the branches of___________?

A. Physical sciences
B. Biological sciences
C. Social science
D. Life sciences branch

Which branch of science plays an important role in engineering?

A. Biology
B. Chemistry
C. Physics
D. All of these

The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is_________?

A. biology
B. physics
C. information technology
D. chemistry

The Branch of Physics deals with highly energetic ions is called__________?

A. Elementary articles
B. Article physics
C. Ionic physics
D. Plasma physics

The__________branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?

A. Solid State Physics
B. Plasma Physics
C. structure is called
D. Nuclear Physics
E. Particle Physics

The branch of Physics which deals with properties of gravitational?

A. Field theory
B. Acoustics
C. Hydro dynamic
D. Optics

The branch of physics which deals with the living things is called_________?

A. biological sciences
B. physical sciences
C. cell systems
D. elementary physics

The physics of moving charge particles is known as__________?

A. Plasma physics
B. Electro-static’s
C. Electro-magnetic
D. Electro-dynamics

Study of living science relates with________?

A. Physical science
B. Biological science
C. Just living science
D. Organ science

The first book of Physics was written by__________?

A. Kelvin
B. Newton
C. Aristotle
D. Faraday

Which one of the following is mass?

A. Proton
B. Electron
C. Neutron
D. Photon

Name the branch of science which deals with the study of sound and sound waves?

A. Aeronautics
B. Acoustics
C. Aerostatics
D. Aetiology

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. none

The co efficient of linear expansion is equal to__________?

A. ΔL = αLΔT

The unit of coefficient of linear expansion or volume expansion is__________?

A. K
B. K-1
C. K -2
D. none

linear expansion occurs in_________?

A. solid
B. liquid
C. both
D. none

When body is in motion, ____________ always changes?

A. its velocity
B. its acceleration
C. its position vector
D. its momentum

A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is ____________________?

A. 10m/s
B. 36m/s
C. zero
D. infinite

Area under velocity time graph represent_____________________?

A. force
B. displacement
C. distance
D. acceleration

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

Inertia of an object is quantitative measure of its__________________?

A. volume
B. density
C. mass
D. temperature

1st law of motion gives the definition of _________________________?

A. rest
B. motion
C. velocity
D. force

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

The dimension of force is____________________?

A. MLT-2
B. ML2T-2
C. ML2T2
D. ML-2T-2

Which of the following pair has same direction always ?

A. force, displacement
B. force, velocity
C. force, acceleration
D. force, momentum

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

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

What is the shape of velocity, time graph for constant acceleration ?

A. straight inclined line.
B. parabola
C. inclined curve
D. declined curve

Which shows the correct relation between time of flight T and maximum height H ?

A. H=gT2/8
B. H=8T2/g
C. H=8g/T2
D. H=gT2

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

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

Distance covered by a freely falling body in 2 seconds will be__________________?

A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m

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

At which angle the range of the projectile is maximum____________________?

A. 45
B. 60
C. 30
D. none

Time rate of change of momentum is equal to____________________?

A. force
B. impulse
C. velocity
D. both A and C

Why Ballistic missile fails in some circumstances of precision ?

A. due to their shape
B. due to air resistance
C. due to angle of projection
D. all of these

A body is moving with uniform velocity. Its______________________?

A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changes

When velocity time graph is a straight line parallel to time axis then__________________?

A. acceleration is const
B. acceleration is variable
C. acceleration is zero
D. velocity is zero

Slope of velocity time graph is_____________________?

A. acceleration
B. distance
C. force
D. momentum

Which law of motion is also called law of inertia ?

A. 1st law
B. 2nd law
C. 3rd law
D. all 1st, 2nd and 3rd laws

Newtons laws do not hold good for particles_______________?

A. at rest
B. moving slowly
C. move with high velocity
D. move with velocity comparable to velocity of light

2nd law of motion gives the definition of________________?

A. force
B. acceleration
C. velocity
D. both force and acceleration

Momentum depends upon__________________?

A. force acts on the body
B. mass of the body
C. velocity of the body
D. both mass and velocity of the body

When a body moves in a straight line then its displacement coincides with__________________?

A. distance
B. force
C. acceleration is zero
D. both A and B

Motorcycle safety helmet extends the time of collision hence decreasing the________________?

A. chance of collision
B. force acting
C. velocity
D. impulse

During long jump, athlete runs before taking the jump. By doing so he__________________?

A. provide him a larger inertia
B. decreases his inertia
C. decreases his momentum
D. increases his momentum

A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?

A. 14 m
B. 20 m
C. 5 m
D. 25 m

When collision between the bodies in a system is inelastic in nature then for system ____________________?

A. momentum changes but K.E remain conserve
B. K.E changes but momentum remain conserve
C. both momentum and K.E changes
D. both momentum and K.E remain conserve

The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?

A. -1
B. 1
C. 2
D. -2

Which of the following is not an example of projectile motion ?

A. a gas filled ballon
B. bullet fired from gun
C. a football kicked
D. a base ball shot

The thrust on the rocket in the absence of gravitational force of attraction is__________________?

A. Constant
B. not constant
C. constant if the rate of ejected gases is constant
D. constant for short range rocket.

When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?

A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s

The distance covered by a body in time t starting from rest is__________________?

A. at2/2
B. Vt
C. a2t/2
D. at2

The trajectory (or path) of a projectile is_________________?

A. straight line
B. parabola
C. hyperbola
D. circle

The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?

A. 1 N
B. 10 N
C. 100 N
D. none

The range of the projectile at 30 deg and 60 deg are__________________?

A. equal to 45 deg
B. equal to 90 deg
C. equal to each other
D. none of the above

Waves transmit ________________ from one place to another?

A. energy
B. mass
C. both
D. none

The distance between any two consecutive crests or troughs is called____________________?

A. frequency
B. period
C. Wave length
D. phase difference

In vibrating cord the points where the amplitude is maximum, are called ___________________?

A. antinodes
B. nodes
C. troughs
D. crests

A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?

A. always an node in formed
B. always an antinode is formed
C. neither node nor antinode is formed
D. sometimes a node and sometimes an antinode is formed

According to Newton sound travel in air under the conditions of_____________________?

A. adiabatic
B. isothermal
C. isobaric
D. isochoric

Velocity of sound in vacuum is ____________________?

A. 332 ms-1
B. 320 ms-1
C. Zero
D. 224 ms-1

The velocity of sound is greatest in___________________?

A. Water
B. air
C. copper
D. ammonia

The velocity of sound in air would become double than its velocity at 0°C at temperature ?

A. 313°C
B. 586°C
C. 819°C
D. 1172°C

Ultrasonic have__________________?

A. frequency in the audible range
B. frequency is greater than 20 kHz
C. frequency lower than 20 Hz
D. all of above

The number of beats produced per second is equal to____________________?

A. the sum of the frequencies of two tuning forks
B. the difference of the frequencies of two tuning forks
C. the ratio of the frequencies of two tuning forks
D. the frequency of either of the two tuning forks

Silence zone takes place due to____________________?

A. constructive interference
B. destructive interference
C. beats
D. resonance

When the source of sound moves away form a stationary listener then ______________ occurs?

A. an apparent increase in frequency
B. an apparent decrease in frequency
C. an apparent decrease in wavelength
D. no apparent change in frequency

Which one is the correct relation for fundamental frequency of open and closed pipe ?

A. fopen = 2 fclosed
B. fclosed = 2fopen
C. fopen = fclosed
D. fopen = 1 / f closed

Newton estimated the speed of sound _____________________?

A. 281m/sec
B. 333m/sec
C. 340m/sec
D. all of the above

The speed of sound in hydrogen is _____________ time than that in oxygen?

A. Two times
B. Three times
C. Four time
D. Six time

The speed of stationary waves in a stretched string are independent of___________________?

A. Number of loops
B. Tension in the string
C. Point where string is plucked
D. both A and C

Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________?

A. Dopplers effect
B. Interference of waves
C. Beats phenomena
D. All of these

The waves that require a material medium for their propagation are called__________________?

A. matter waves
B. electromagnetic waves
C. carrier waves
D. mechanical waves

When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?

A. decreases
B. increases
C. remains unchanged
D. becomes zero

If stretching force T of wire increases, then its frequency __________________?

A. decreases
B. increases
C. remains the same
D. any of above

It is possible to distinguish between transverse and longitudinal waves form the property of __________________?

A. refraction
B. polarization
C. interference
D. diffraction

Sound waves do not travel in vacuum because ___________________?

A. they are transverse waves
B. they are stationary waves
C. they require material medium for propagation
D. they do not have enough energy

Increase in velocity of sound in the air for 1°C rise in temperature is_________________?

A. 1.61 ms-1
B. 61.0 ms-1
C. 0.61 ms-1
D. 2.00 ms-1

On loading the prong of a tuning form with wax its frequency____________________?

A. increases
B. decreases
C. remains unchanged
D. may increase or decrease

The normal ear is the most sensitive in the frequency range___________________?

A. 20000 to 30000 hertz
B. 10 to 20 hertz
C. 2000 to 4000 hertz
D. 6000 to 8000 hertz

The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

A. 313°C
B. 586°C
C. 819°C
D. 1172°C

The periodic alternation of sound between maximum and minimum loudness are called___________________?

A. silence zone
B. interference
C. beats
D. resonance

Beats are the results of____________________?

A. diffraction of sound waves
B. constructive and destructive interference
C. polarization
D. destructive interference

Doppler effect applies to____________________?

A. sound wave only
B. light wave only
C. both sound and light waves
D. neither sound nor light wave

A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

A. 1/4f
B. 1/2f
C. frequency lower than 20 Hz
D. 2f

In open organ pipe___________________?

A. only even harmonics are present
B. only odd harmonics are present
C. both even and odd harmonics are present
D. selected harmonics are present

The dimension of elastic modulus is ___________________ ?

A. ML-1T-2
B. ML-2T-2
C. MLT-2
D. ML2T-2

Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

A. Longitudinal
B. Transverse
C. Periodic
D. both A and C

Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?

A. isothermal law
B. adiabatic law
C. isochoric law
D. all of the above

The beats frequency (sensible) for a human car is _____________________?

A. 42Hz
B. 7 Hz
C. 256Hz
D. 262Hz

Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?

A. One
B. Two
C. Four time
D. None of these

The current through a metallic conductor is due to the motion of _________________?

A. free electrons
B. protons
C. neutrons
D. still under controversy

A wire having very high value of conductance is said to be____________________?

A. very good conductor
B. moderately good conductor
C. an insulator
D. no specific criterion available

Production of heat due to an electric current flowing through a conductor is given by _________________?

A. Joule effect
B. Joule Thomsons effect
C. Comptons effect
D. Feed back effect

Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?

A. 40 W
B. 90W
C. 100W
D. 120W

Thermocouples convert___________________?

A. heat energy into electrical energy
B. heat energy into light energy
C. heat energy into mechanical energy
D. mechanical energy into heat energy


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