WorksheetsPhysics - Part 3
Total questions: 55
Worksheet time: 28mins
What is a measure of the inertia of an object?
Density
Weight
Mass
Force
The _____ of the source is the luminous flux per unit area of the source
luminous emittance
luminous intensity
luminous intensity
illumination
What refers to the brightness of a light source?
Luminous intensity
Luminous flux
Illumination
Luminous efficiency
A spectrum formed by the dispersion of light from an incandescent solid, liquid and gas is called
Visible spectrum
Continuous spectrum
Emission spectrum
discontinuous spectrum
What refers to the measure of the energy of sound?
Intensity
Loudness
Pitch
Sone
Brightness is the same as
Luminous emittance
Luminous efficiency
luminous intensity
Illumination
The size of some bacteria and living cells is in order of ______
centimeter
millimetre
nanometer
micrometer
What refers to the mass which is accelerated at the rate of one foot per second squared when acted on by a force of one pound?
Slug
Erg
Dyne
BTU
The velocity of sound is ______ the pressure of the gas
directly proportional to
inversely proportional to
independent of
the speed of light divided
Water starts boiling when
Its temperature reaches 100°C
Its vapour pressure equals 76 cm of mercury
Its saturated vapour pressure equals the external pressure on its surface
Its saturated vapour pressure is less than the atmospheric pressure
It is hotter over the top of a fire than at the same distance on the sides because of:
Convection of heat
Conduction of heat
Radiation of heat
Conduction, convection and radiation of heat
Why is sound wave travel faster in water than in air?
Because water has greater density than air
Because water has greater bulk modulus than air
Because water has more terms of number of molecules than air
Because water has more in volume than air
What is the purpose of a unit vector?
To describe the direction in space
To indicate a magnitude without reference to direction
To serve as comparison with other vectors
To set a standard among vectors
What type of lens deviates parallel light outward as through it originates at a single virtual focal point?
Magnifying lens
Convergent lens
Divergent lens
Microscopic lens
Angular momentum is the product of ______
Moment of inertia and linear speed
Moment of area and angular speed
Moment of inertia and angular speed
Moment of area and angular speed
What is the average pressure of the earth's atmosphere at sea level?
1.042 bar
1.021 bar
1.013 bar
1.037 bar
In opaque material,
Light is able to pass through
The refracted energy is absorbed within a very thin layer and converted to heat
Light is partially absorbed
The refracted energy is absorbed within a thick layer and converted to heat
"The net electric charge in an isolated system remains constant". This is known as
Principle of conservation of attraction
Principle of conservation of charge
Coulomb's law
Principle of superconductivity
A rotating body has kinetic energy. This statement is _____
Sometimes true
Sometimes false
Always true
Always false
In telescopes, what refers to the ratio between the angle subtended at the eye by the image and the angle subtended at the eye by the object seen directly?
Magnifying power
Linear magnification
Angular magnification
Object magnification
The theory that the retina of the eye is provided with the three sets of receptors, each of which is sensitive to one of the primary colors is known as
True color vision theory
Young-Helmholtz color vision theory
Primary vision theory
Young-Huygens primary vision theory
What coating material is used in the inside of the fluorescent lamp which emits visible light when it is excited by ultraviolet radiation?
Mercury
Inert gas
Phosphor
Argon
Which of the ff. is an example of a stable equilibrium?
A cone balanced on its apex
A cone balanced on its base
A cone on its side
A cone balanced on the circumference of its base
A diatonic scale is a musical scale build-up of how many major chords?
2
3
4
5
When the temperature of an ideal gas is increased at constant pressure,
The potential energy of molecules increases
The potential energy of molecules decreases
The kinetic energy of molecules increases
The kinetic energy of molecules decreases
The six colors of which sunlight is composed are called ______
Secondary colors
Primary colors
Complementary colors
Elementary colors
What is a three-dimensional image of an object illuminated by a broad band of coherent light?
Hologram
Polygram
Opaque image
Translucent image
What is the wavelength band in nanometer of visible light?
350nm-700nm
350nm-800nm
300nm-700nm
300nm-800nm
At what intensity will sound wave starts to damage the ear of humans?
10 W/m²
0.1 W/m²
1 W/m²
0.01 W/m²
How many decibels should a sound be to be barely audible?
0
0.1
0.01
1.5
When the sum of the external torques acting on a system of particles is zero, the total angular momentum of the system remains constant.
Conservation of energy
Conservation of impulse
Conservation of linear momentum
Conservation of angular momentum
What rem is used to describe the angular opening of sphere that encloses the mirror?
Angle of curvature
Focal point
Aperture
Vertex
How many kilograms are there in one slug?
11.9
12.5
13.2
14.6
Coefficient of restitution is the ratio of:
Relative speed after collision to relative speed before collision
Relative speed before collision to relative speed after collision
Relative speed to absolute speed
Absolute speed to relative speed
In optical system, what refers to the ratio of the image height to the object height?
Linear magnification
Object magnification
Image magnification
Height magnification
A spectrum consisting of monochromatic slit images having wavelengths characteristics of the atoms parent is called?
line spectrum
continuous spectrum
slit spectrum
image spectrum
What refers to the part of the shadow form which all light is excluded?
Index of refraction
Index of diffusion
relative index of refraction
relative index of diffusion
A device that transmits force or torque is called ________
mechanical tool
machine
axle
wedge
When can we say that a collision is a completely inelastic collision?
When the kinetic energy lost is minimum
When the kinetic energy is conserved
When the two colliding objects sticks together after impact
When the two colliding objects will separate after impact
What refers to the part of the shadow form which all light is excluded?
Footprint
Umbra
Sunspot
Lumbra
What refers to the property of some media to transmit light wave in a diffused matter to make objects behind them in distinguishable?
Lucidity
Limpidity
Transparent
Translucent
What is a vector with a magnitude of one and with no unit?
Single vector
Unit vector
Dot vector
Scalar vector
What is an elemental unit of energy?
Quartz
Quark
Photon
Quantum
What occurs when the resulting composite wave has an amplitude greater than that of either of the original waves?
Local interference
Ordinary interference
Constructive interference
Destructive interference
What are high-frequency em waves emitted when fast electrons impinge on matter?
Beta rays
Alpha rays
X-rays
De Broglie waves
The surface of the thermos flask is silvered for minimizing heat transfer by what process?
Conduction
Radiation
Convection
Vaporization
“The work done by the net force on a particle equals the change in the particle’s kinetic energy”. This statement is known as ________
Law of conservation of energy
Work-energy theorem
Law of conservation of work
Total work theorem
A camera usually uses what type of lens to form an image on a light sensitive photographic film?
Magnifying lens
Convergent lens
Divergent lens
Microscopic lens
What refers to an artificially made polarizing material that transmits light with only single plane of polarization?
Quartz
Fiber optic
Polaroid
Tourmaline
What is the coefficient of restitution for a perfectly inelastic collision?
0
1
less than 1
greater than 1
What is dispersion?
It is the scattering of white light behind an obstruction
It is the separation of white light into its component colors
It is the merging of the component colors into white light
It is the absorption of white light in the atmosphere
The centripetal acceleration of a particle in uniform motion is ________ the radius of its path
directly proportional
inversely proportional
equal
not related in any way
What is a probable explanation for observe phenomena which is supported by abundant data?
Theory
Hypothesis
Axiom
Conclusion
When common salt is sprinkled on ice, the temperature of ice
increases
decreases
remains unchanged
none of these
The boiling point of water on plains is 100ºC. At hills it will be
100ºC
less than 100ºC
more than 100ºC
may be any of the above
