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Physics

What is the SI unit of mass?
Pound
Kilogram
Gram
Slug
What is the S.I unit of time?
Hour
Minute
Day
Second
What prefix refers to 10 to the negative 18th power?
Atto
Femto
Pico
Nano
The physical relationship of gaseous system is treated by _____ of gases in which their properties are related to P, T, and V of system
Van de waals
Chemical abstract
Kinetic theory
Chemical reation
What is the unit of potential difference?
WATT
Coulomb
Volt
Weber
Which of the following is the equivalent of farad?
Coulomb/volt
Joule/volt
Joule/coulomb
Coulomb/joule
What is the unit of luminous intensity?
Footcandle
Lumen
Candela
Lux
Which one is equivalent to the unit joule?
Newton-second
Newton-meter
Newton-meter per second
Newton-meter per second squared
What is another term for a scalar product of two vectors?
Cross product
Vector product
Dot product
Plus product
The vector product of any vector with itself is
Equal to 1
Greater than 1
Less than 1
Equal to 0
"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 conversation of work
Total work theorem
"What is the property of matter which is the reluctance to change its state of rest or of uniform motion?
Impulse
Momentum
Inertia
Equilibrium
"If no net force acts on it, an object at rest will remain at rest and an object in motion will remain in motion at constant velocity". This statement is the
First law of motion
Second law of motion
Third law of motion
D'Alembert's principle
What is the energy something possesses by virtue of its motion?
Kinetic energy
Potential energy
Rest energy
Mechanical energy
When the vector sum of the external forces acting on the system of particles equals zero, the total linear momentum of the system
Becomes 0
Maximizes
Changes abruptly
Remains constant
In elastic collision, kinetic energy is conserved. This statement is:
True
False
Either true or false, depending upon the colliding bodies
Either true or false, depending on the impact of two colliding bodies
The coefficient of restitution always applies
To only one of the colliding objects
To neither of the colliding objects
Jointly to the colliding objects
To the bigger colliding objects
Steepness of the travelling waves is attenuated by
Resistance of the line
Inductance of the line
Capacitance of the line
All of the above
The absorption of radio waves by the atmosphere depends on which of the following?
The polarization of atmosphere
Their frequency
Their distance from the transmitter
The polarization of the waves
The polarization of dielectric material results in
Production of eddy current
Creation of electric dipoles
Absorptions of electrons
Release of high velocity protons
What refers to the change in frequency of a wave when there is relative motion between its source and an observer?
Superposition principle
Shock effect
Doppler effect
Wave motion
Infrasound refers to the sounds whose frequency arre below
20 Hz
30 Hz
40 Hz
50 Hz
The ________ of an electric field is the electric potential energy per unit volume associated with it
Capacitance
Polar energy
Energy density
Dielectric distance
What is defined as the luminous flux per unit area?
Luminous intensity
Luminous efficiency
Illumination
Lumen
Light ray that passes at an angle from one medium to another is deflected at the surface between the 2 media. What is this phenomenon called?
Dispersion
Reflection
Refraction
Incidence
"Every point on the wavefront can be considered as a source of secondary wavelets that spread out in all directions with the wave speed of the medium. The wavefront at any time is the envelope of there wavelets". This statement is also known as
Huygens principle
Snell's law
Maxwell's hypothesis
Doppler's effect
What is a defect of vision caused by the cornea having different curvatures in different planes?
Astigmatism
Myopia
Hyperopia
Presbyopia
In optical system, what refers to its ability to produce separate images of nearby objects?
Coherent power
Brewster's power
Polarization power
Resolving power
A free falling object is acted upon by which of the following?
Weight of the body
Air resistance and gravitational pull
Gravitational pull
Air resistance
Who predicted the existence of electromagnetic waves in 1865?
Roentgen
Maxwell
Tesla
Doppler
What refers to the defect in lenses which causes unequal refraction of the different colors?
Chromatic diffraction
Chromatic polarization
Chromatic aberration
Chromatic dispersion
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