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Free Physics Quiz Test 02
An electric field can deflect
(A) Gama-rays
(B) Alpha-particles
(C) Neutrons
(D) X-rays
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
The rate of flow of Electric charge through the surface is known as
(A) Charge
(B) Electric Current
(C) Power
(D) Voltage
The current per unit area is called
(A) Resistance
(B) Potential difference
(C) Electric charge
(D) 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
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
Which of the following substance will be most suitable for the Transformer core?
(A) Soft iron
(B) Nickel
(C) Steal
(D) Copper
The SI unit of magnetic induction is:
(A) Webber
(B) Webber per meter
(C) Henry
(D) Tesla
Calorie is a unit of which of the following?
(A) Food Intake
(B) Diet
(C) Quantity of Heat
(D) None of these
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
Which one of the following is an example of resonance?
(A) Swing
(B) Turning a radio
(C) Microwave Oven
(D) 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
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
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
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
The slope of a velocity-time graph represents
(A) Distance
(B) Speed
(C) Acceleration
(D) Displacement
The centre of gravity of a sprinter during the race lies
(A) Ahead of his feet
(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
Which of the following is the smallest unit of length?
(A) Micron
(B) Nanometer
(C) Fermimeter
(D) Angstram
The layer of atmosphere used for radio wave transmission is
(A) Ionosphere
(B) Troposphere
(C) Chromosphere
(D) Stratosphere
Distance of stars are measured in
(A) Cosmic Kilometre
(B) Galactic Unit
(C) Light Year
(D) Stellar Mile
Blowing air with open pipe is an example of
(A) Isochronic Process
(B) Adiabatic Process
(C) Isothermal Process
(D) Isobaric Process
Light beam which is highly directional is called
(A) Laser
(B) Maser
(C) Eraser
(D) Grazer
Who enunciated the laws of planetary motion?
(A) Isaac Newton
(B) Galileo
(C) Johannes Kepler
(D) Nicolaus Copernicus
If the temperature of a place increases suddenly, the relative humidity
(A) Increases
(B) Remains constant
(C) Fluctuates
(D) 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
The branch of Physics which deals with properties of gravitational?
(A) Acoustics
(B) Field theory
(C) Hydro dynamic
(D) Optics
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
The Branch of Physics deals with highly energetic ions is called?
(A) Elementary articles
(B) Article physics
(C) Ionic physics
(D) 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
Which branch of science plays an important role in engineering?
(A) Biology
(B) Chemistry
(C) Physics
(D) Computer
Physics is one of the branches of?
(A) Biological sciences
(B) Physical sciences
(C) Social science
(D) Life sciences branch
The branch of science which deals with the properties of matter and energy is called?
(A) Biology
(B) Geography
(C) Physics
(D) Chemistry
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
The SI unit of Heat is?
(A) Watt
(B) Volt
(C) Joule
(D) Newton
1 Meter = _________ millimeters?
(A) 10000 millimeters
(B) 10 millimeters
(C) 1000 millimeters
(D) None of these
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
Which one of the following has the highest value of specific heat ?
(A) Alcohol
(B) Methane
(C) Kerosene
(D) Water
Product of Force and Velocity is called
(A) Work
(B) Power
(C) Energy
(D) Momentum
If electrical conductivity increases with the increase of temperature of a substance, then it is a
(A) Conductor
(B) Semiconductor
(C) Insulator
(D) Carborator
Young s modulus is the property of
(A) Gas only
(B) Both Solid and Liquid
(C) Liquid only
(D) 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
Electrical energy is measured in
(A) watt
(B) horse power
(C) kilo watt
(D) kilowatt hour
Holes can exist in
(A) Conductors
(B) Insulators
(C) Semi conductors
(D) All of the above
The frequency of the second pendulum is
(A) 1 hertz
(B) 0.5 hertz
(C) 1.5 hertz
(D) 2.5 hertz
Rest mass of a photon is
(A) infinite
(B) zero
(C) very small
(D) 1.67 x 10-27 kg
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
Dimension of pressure
(A) MLT
(B) ML-1T-1
(C) ML-1T-2
(D) ML-2T-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
A body can have constant velocity when it follows a
(A) Elliptical path
(B) Circular path
(C) Parabolic path
(D) Rectilinear path
Silence zone takes place due to
(A) constructive interference
(B) destructive interference
(C) beats
(D) resonance
_____________ cells converts solar energy into electrical energy?
(A) rotory
(B) photovoltaic
(C) galvanic
(D) non of these
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
In monochromatic red light a blue book will probably appear to be
(A) black
(B) purple
(C) green
(D) no scientific reasoning available
The bulk properties of materials such as their mode of fracture can be related to their
(A) Polymerization
(B) Cleavage
(C) Microstructure
(D) Dislocation
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
The drag force is given by
(A) Newtons law
(B) Pascals law
(C) Gauss law
(D) 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
An inductor may store energy in
(A) Its electric field
(B) Its coils
(C) Its magnetic field
(D) Both electric and magnetic fields
Newton estimated the speed of sound
(A) 281m/sec
(B) 333m/sec
(C) 340m/sec
(D) all of the above
For ___________ flow the path of the fluid particles cannot be tracked?
(A) Laminar
(B) Streamline
(C) Turbulent
(D) Both A and B
Boyles law helds for ideal gases in
(A) isochoric processes
(B) isobaric processes
(C) isothermal processes
(D) adiabatic 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
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
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
The dimension of force is
(A) MLT-1
(B) MLT-2
(C) ML-1T
(D) ML-1T-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
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
The blue colour of the sky is due to
(A) diffraction
(B) reflection
(C) polarization
(D) scattering
The performance of a refrigerator is described by
(A) efficiency
(B) coefficient of performance
(C) Both A and B
(D) None of these
A vector can be multiplied by a number. The number may be
(A) Dimensionless
(B) Dimensional scalar
(C) Negative
(D) 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
S.I unit of frequency is
(A) Vibration S-2
(B) Radian
(C) Hertz
(D) ms-1
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
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
Crystals of a material can behave as
(A) Convex lens
(B) Interferometer
(C) Diffraction grating
(D) Concave
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
Coercive force is the force which opposes
(A) Demagnetization
(B) Breakage
(C) Extension
(D) Surface cracking
Forced vibration is known as
(A) Simple harmonic vibration
(B) Natural vibration
(C) Driven harmonic vibration
(D) Free vibration
The electrons in conduction band are free to
(A) Transport vibrations
(B) Transport signals
(C) Transport charge
(D) Transport impulses
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
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
What is the energy called that stored in a dam?
(A) Potential energy
(B) Kinetic energy
(C) Electrical energy
(D) None of these
Dynamite was invented by
(A) Alfred Nobel
(B) Thomas Edison
(C) William Davis
(D) None of these
The speed of light is
(A) 280,000 km/s
(B) 300,000 km/s
(C) 320,000 km/s
(D) None of these
Chronometer is used to measure
(A) Velocity
(B) Pressure
(C) Time
(D) None of these
Electric current is measured In
(A) Volts
(B) Watts
(C) Kilojoules
(D) Amperes