# Physics Online Quiz Test 02

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Physics Online Quizzes

Free Physics Quiz Test 02 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.

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Contents

### Free Physics Quiz Test 02

An electric field can deflect
(A) Gama-rays
(B) Alpha-particles
(C) Neutrons
(D) X-rays

Alpha-particles

If an electron has an initial velocity in a direction different from that of an electric field, the path of the electron is
(A) A parabola
(B) An ellipse
(C) A straight line
(D) A Circle

A parabola

The rate of flow of Electric charge through the surface is known as
(A) Charge
(B) Electric Current
(C) Power
(D) Voltage

Electric Current

The current per unit area is called
(A) Resistance
(B) Potential difference
(C) Electric charge
(D) Current density

Current density

The temperature at which the value of resistivity falls to zero is called
(A) Zero temperature
(B) Lowest temperature
(C) Critical temperature
(D) Absolute zero temperature

Critical temperature

As the charge flows through the conductor energy is dissipated in the form of
(A) Heat
(B) Solar energy
(C) Light
(D) None of these

Heat

Which of the following substance will be most suitable for the Transformer core?
(A) Soft iron
(B) Nickel
(C) Steal
(D) Copper

Soft iron

The SI unit of magnetic induction is:
(A) Webber
(B) Webber per meter
(C) Henry
(D) Tesla

Tesla

Calorie is a unit of which of the following?
(A) Food Intake
(B) Diet
(C) Quantity of Heat
(D) None of these

Quantity of Heat

To access the total uncertainty or error, it is necessary to evaluate the likely uncertainties in?
(A) Any Factor Involved in that Calculation
(B) Dominant Factor Involved in that Calculation
(C) All Factors Involved in that Calculation
(D) None of these

All Factors Involved in that Calculation

Which one of the following is an example of resonance?
(A) Swing
(C) Microwave Oven
(D) All of these

All of these

A mass attached with a spring vibrates up and down produces?
(A) Longitudinal Periodic Waves
(B) Transverse Periodic Waves
(C) Both a & b
(D) None of these

Transverse Periodic Waves

The regions of the spring in which spring is stretched more than its normal position are known as?
(A) Troughs
(B) Rarefactions
(C) Crests
(D) Compressions

Rarefactions

A free-falling object has an acceleration of
(A) 343 m/s
(B) 9.80 km/s2
(C) 9.80 m/s2
(D) 9.80 cm/s2

9.80 m/s2

The Speed of Light in a Vacuum is
(A) 5000,282 Miles per Second
(B) 100,000 Miles per Second
(C) 186,282 Miles per Second
(D) None of these

186,282 Miles per Second

The slope of a velocity-time graph represents
(A) Distance
(B) Speed
(C) Acceleration
(D) Displacement

Acceleration

The centre of gravity of a sprinter during the race lies
(B) At the center of the body
(C) To the left side of the body
(D) Behind his feet

When two persons talk to each other, then sound for how much decibel is produced?
(A) 5 decibel
(B) 10 decibel
(C) 30 decibel
(D) 100 decibel

30 decibel

Which of the following is the smallest unit of length?
(A) Micron
(B) Nanometer
(C) Fermimeter
(D) Angstram

Fermimeter

The layer of atmosphere used for radio wave transmission is
(A) Ionosphere
(B) Troposphere
(C) Chromosphere
(D) Stratosphere

Ionosphere

Distance of stars are measured in
(A) Cosmic Kilometre
(B) Galactic Unit
(C) Light Year
(D) Stellar Mile

Light Year

Blowing air with open pipe is an example of
(A) Isochronic Process
(C) Isothermal Process
(D) Isobaric Process

Isobaric Process

Light beam which is highly directional is called
(A) Laser
(B) Maser
(C) Eraser
(D) Grazer

Laser

Who enunciated the laws of planetary motion?
(A) Isaac Newton
(B) Galileo
(C) Johannes Kepler
(D) Nicolaus Copernicus

Johannes Kepler

If the temperature of a place increases suddenly, the relative humidity
(A) Increases
(B) Remains constant
(C) Fluctuates
(D) Decreases

Decreases

The branch of physics which deals with the living things is called?
(A) biological sciences
(B) physical sciences
(C) cell systems
(D) elementary physics

biological sciences

The branch of Physics which deals with properties of gravitational?
(A) Acoustics
(B) Field theory
(C) Hydro dynamic
(D) Optics

Field theory

What branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?
(A) Solid State Physics
(B) Plasma Physics
(C) Particle Physics
(D) Nuclear Physics

Nuclear Physics

The Branch of Physics deals with highly energetic ions is called?
(A) Elementary articles
(B) Article physics
(C) Ionic physics
(D) Plasma physics

Plasma physics

The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is?
(A) physics
(B) biology
(C) information technology
(D) chemistry

physics

Which branch of science plays an important role in engineering?
(A) Biology
(B) Chemistry
(C) Physics
(D) Computer

Physics

Physics is one of the branches of?
(A) Biological sciences
(B) Physical sciences
(C) Social science
(D) Life sciences branch

Physical sciences

The branch of science which deals with the properties of matter and energy is called?
(A) Biology
(B) Geography
(C) Physics
(D) Chemistry

Physics

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) 1.5
(D) 1.25

1.5

The SI unit of Heat is?
(A) Watt
(B) Volt
(C) Joule
(D) Newton

Joule

1 Meter = _________ millimeters?
(A) 10000 millimeters
(B) 10 millimeters
(C) 1000 millimeters
(D) None of these

1000 millimeters

What is the magnetic field at any point in the open space inside the toroid?
(A) Zero
(B) One
(C) Depends on the current in the turns
(D) Depends on number of turns

Zero

Which one of the following has the highest value of specific heat ?
(A) Alcohol
(B) Methane
(C) Kerosene
(D) Water

Water

Product of Force and Velocity is called
(A) Work
(B) Power
(C) Energy
(D) Momentum

Power

If electrical conductivity increases with the increase of temperature of a substance, then it is a
(A) Conductor
(B) Semiconductor
(C) Insulator
(D) Carborator

Semiconductor

Young s modulus is the property of
(A) Gas only
(B) Both Solid and Liquid
(C) Liquid only
(D) Solid only

Solid only

A piece of ice is dropped in a vesel containing kerosene. When ice melts, the level of kerosene will
(A) Rise
(B) Fall
(C) Remain Same
(D) None of these

Fall

Electrical energy is measured in
(A) watt
(B) horse power
(C) kilo watt
(D) kilowatt hour

kilowatt hour

Holes can exist in
(A) Conductors
(B) Insulators
(C) Semi conductors
(D) All of the above

Semi conductors

The frequency of the second pendulum is
(A) 1 hertz
(B) 0.5 hertz
(C) 1.5 hertz
(D) 2.5 hertz

0.5 hertz

Rest mass of a photon is
(A) infinite
(B) zero
(C) very small
(D) 1.67 x 10-27 kg

zero

A photon of wavelength 900nm behaves like a particle of mass
(A) 5.53 x 10-36kg
(B) 0 kg
(C) 2.46 x 10-36kg
(D) 1.84 x 10-44kg

2.46 x 10-36kg

Dimension of pressure
(A) MLT
(B) ML-1T-1
(C) ML-1T-2
(D) ML-2T-2

ML-1T-2

In hydrogen spectrum which one of the following series lies in the ultraviolet region ?
(A) Balmer series
(B) Pfund series
(C) Bracket series
(D) Lymann series

Lymann series

A body can have constant velocity when it follows a
(A) Elliptical path
(B) Circular path
(C) Parabolic path
(D) Rectilinear path

Rectilinear path

Silence zone takes place due to
(A) constructive interference
(B) destructive interference
(C) beats
(D) resonance

destructive interference

_____________ cells converts solar energy into electrical energy?
(A) rotory
(B) photovoltaic
(C) galvanic
(D) non of these

photovoltaic

An alternating current or voltage
(A) fluctuates off and on
(B) varies in magnitude alone
(C) changes its direction again and again
(D) changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals

changes its direction again and again

In monochromatic red light a blue book will probably appear to be
(A) black
(B) purple
(C) green
(D) no scientific reasoning available

black

The bulk properties of materials such as their mode of fracture can be related to their
(A) Polymerization
(B) Cleavage
(C) Microstructure
(D) Dislocation

Microstructure

The unit of force is _________ and its symbol is ______________ Which is the correct pair ?
(A) Newton, n
(B) Newton, N
(C) newton, n
(D) newton, N

newton, N

The drag force is given by
(A) Newtons law
(B) Pascals law
(C) Gauss law
(D) Stokes law

Stokes law

At constant temperature the graph between V and 1/P is
(A) Hyperbola
(B) Parabola
(C) A curve of any shape
(D) A straight lime

A straight lime

An inductor may store energy in
(A) Its electric field
(B) Its coils
(C) Its magnetic field
(D) Both electric and magnetic fields

Its magnetic field

Newton estimated the speed of sound
(A) 281m/sec
(B) 333m/sec
(C) 340m/sec
(D) all of the above

281m/sec

For ___________ flow the path of the fluid particles cannot be tracked?
(A) Laminar
(B) Streamline
(C) Turbulent
(D) Both A and B

Turbulent

Boyles law helds for ideal gases in
(A) isochoric processes
(B) isobaric processes
(C) isothermal processes

isothermal processes

A field in which the work done in a moving a body along closed path is zero is called
(A) electric field
(B) conservative field
(C) electromagnetic field
(D) gravitational field

conservative field

The maximum safe limit dose for persons working in a nuclear power station is
(A) 1 rem per week
(B) 5 rem per week
(C) 4 rem per week
(D) 3 rem per week

5 rem per week

In multimode step index fibre the refractive index of core and cladding is
(A) same
(B) different
(C) zero
(D) different with refractive index of core higher than cladding

different with refractive index of core higher than cladding

The dimension of force is
(A) MLT-1
(B) MLT-2
(C) ML-1T
(D) ML-1T-2

MLT-2

In the transistor schematic symbol, the arrow
(A) is located on the emitter
(B) is located on the base
(C) is locate on the collector
(D) points form north to south

is located on the emitter

o find the r.m.s value of an alternating current mathematically we need to have
(A) Mean value of I2
(B) Square root of mean value of I2
(C) Square root of I2
(D) Square of 1/2

Square root of mean value of I2

The blue colour of the sky is due to
(A) diffraction
(B) reflection
(C) polarization
(D) scattering

scattering

The performance of a refrigerator is described by
(A) efficiency
(B) coefficient of performance
(C) Both A and B
(D) None of these

coefficient of performance

A vector can be multiplied by a number. The number may be
(A) Dimensionless
(B) Dimensional scalar
(C) Negative
(D) All of the above

All of the above

In Compton scattering, the change in wavelength is maxed if
(A) The angle of scattering is 90°
(B) The angle of scattering is 60°
(C) The angle of scattering is 180°
(D) The angle of scattering is 0

The angle of scattering is 180°

S.I unit of frequency is
(A) Vibration S-2
(C) Hertz
(D) ms-1

Hertz

The minimum wavelength of X-rays can further be reduced by
(A) Reducing the pressure or cooling the target
(B) Increasing the temperature of the filament
(C) Using a target element of higher atomic number
(D) Increasing the potential difference between the cathode and the target

Increasing the potential difference between the cathode and the target

If a diffraction grating is placed in the path of a light beam it reveals
(A) Wave property
(B) Particle property
(C) Energy particle
(D) Electromagnetic wave property

Wave property

Crystals of a material can behave as
(A) Convex lens
(B) Interferometer
(C) Diffraction grating
(D) Concave

Diffraction grating

The simplest type of rectification known as half wave rectification is obtained by
(A) using a transistor
(B) suppressing half wave of A.C supply by using diode
(C) suppressing the harmonics in A.C voltage
(D) using a Coolidge tube

suppressing half wave of A.C supply by using diode

Coercive force is the force which opposes
(A) Demagnetization
(B) Breakage
(C) Extension
(D) Surface cracking

Demagnetization

Forced vibration is known as
(A) Simple harmonic vibration
(B) Natural vibration
(C) Driven harmonic vibration
(D) Free vibration

Driven harmonic vibration

The electrons in conduction band are free to
(A) Transport vibrations
(B) Transport signals
(C) Transport charge
(D) Transport impulses

Transport charge

A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will
(A) Increase
(B) Decrease
(C) Remain Unaffected
(D) Have Its Shape Changed

Increase

When the temperature of the medium is the rise, the speed of light
(A) Decrease
(B) Increase
(C) First, decrease then increase
(D) Remain the same

Remain the same

What is the energy called that stored in a dam?
(A) Potential energy
(B) Kinetic energy
(C) Electrical energy
(D) None of these

Potential energy

Dynamite was invented by
(A) Alfred Nobel
(B) Thomas Edison
(C) William Davis
(D) None of these

Alfred Nobel

The speed of light is
(A) 280,000 km/s
(B) 300,000 km/s
(C) 320,000 km/s
(D) None of these

300,000 km/s

Chronometer is used to measure
(A) Velocity
(B) Pressure
(C) Time
(D) None of these