What refers to the part of the shadow form which all light is excluded?
AFootprint
BLumbra
CUmbra
DSunspot
ESAS · Question Bank
Physics
106 of 236 questions match · page 4 of 6. Answer in your head first, then check the solution.
What instrument is used to measure humidity of air?
AHydrometer
BHygrometer
CLactometer
DRadiometer
Brightness is the same as _________
Aluminous emittance
Bluminous efficiency
Cluminous intensity
Dillumination
What is monochromatic light?
ALight with only one color
BLight with only one wavelength
CLight with only one color and one wavelength
DLight with many colors
What is a three-dimensional image of an object illuminated by a broad band of coherent light?
AHologram
BPolygram
COpaque image
DTranslucent image
The ratio of the speeds of light in two different media is known as _________
Aindex of refraction
Bindex of diffraction
Crelative index of refraction
Dindex of diffusion
The moment of inertia of an object is dependent on which of the ff?
AThe object's size and shape
BThe object's mass
CThe location of the axis of rotation
Dall of these
Which of the ff statements about center of gravity is TRUE?
AIt may be outside the object
BIt is always at its geometrical center
CIt is always in the interior of the object
DIt is sometimes arbitrary
What is a nucleon
AA proton in the nucleus of an atom
BAn electron in the nucleus of an atom
CA neutron in the nucleus of an atom
DA proton or neutron of an atom
What is a probable explanation for observe phenomena which is supported by abundant data?
ATheory
BHypothesis
CAxiom
DConclusion
Light scattered perpendicularly to an incident beam is partly
ADiffracted
BPolarized
CMonochromatic
DRefracted
What is the SI unit of mass?
ANewton
BKilogram
CSlug
DPound
Pluto travels from Perihelion to aphelion. What is the work done by gravity on pluto?
AZero
BNegative
CPositive
DUndetermined
What is the principle behind fiber optics?
AReflection
BRefraction
CDiffraction
DDispersion
When magma rocks cool, these rocks are called
AGranite
BSedimentary rocks
CIgneous rocks
DMetamorphic rocks
The chief source of energy in the world today is
ACoal
BOil
CNatural gas
DUranium
The phenomenon of melting under pressure and freezing again when the pressure is reduced is known as
ASublimation
BCondensation
CDeposition
DRegelation
1 kWhr is how many kilojoules?
A360
B3600
C1000
D100
As a person moves closer to a plane mirror, the size of the image formed by the mirror
ARemains the same
BGets larger
CGet smaller
DIncreases, then decreases
Which of the following is the poorest conductor of electricity?
ACarbon
BSilver
CSteel
DAluminum