A wave that needs a material medium through which it can travel as it transfers energy?
AElectromagnetic wave
BRadiowave
CMicrowave
DMechanical wave
ESAS · Question Bank
Physics
200 questions · page 9 of 10. Answer in your head first, then check the solution.
What refers to the band of colors produced when sunlight passes through a prism?
ALight spectrum
BSolar spectrum
CWhite spectrum
DVisible spectrum
What refers to the property of some media to transmit light wave in a diffused matter to make objects behind them undistinguishable?
ALucidity
BLimpidity
CTransparent
DTranslucent
What refers to the part of the shadow form which all light is excluded?
AFootprint
BLumbra
CUmbra
DSunspot
The range of the projectile is:
Adirectly proportional to the gravitational acceleration
Bdirectly proportional to the square velocity
Cdirectly proportional to the velocity
Dinversely proportional to the velocity
What instrument is used to measure humidity of air?
AHydrometer
BHygrometer
CLactometer
DRadiometer
Kepler's second law is based on which of the ff?
ALaw of universal gravitation
BLaw of conservation of angular momentum
CTheory of relativity
DLaw of conservation of energy
The velocity of projection of a body which takes it beyond the earth's gravitational attraction is called __________ of the body
Aterminal velocity
Bdrag velocity
Cescape velocity
Dgeostationary velocity
The escape velocity is:
Athe same for all bodies
Bdependent on the mass of the body
Cinversely proportional to the gravitational constant
Ddependent on the distance of the body from the surface of the earth
What is the value of the escape velocity in km/s?
A11.2
B12.1
C13.2
D14.1
The speed of sound is ________ the density of a gas?
Adirectly proportional to
Binversely proportional
Cindependent of
Dspeed of light divided by
The velocity of sound in air is equal to the square root of the ratio of the pressure of the gas to the density of the medium. This equation is known as:
AMaxwell's formula
BHuygen's formula
CLaplace formula
DNewton's formula
Indicate FALSE statement
ASound travels faster in hydrogen than nitrogen
BSound travels faster in low density gases
CSpeed of sound increases with the increase in temperature
DSpeed of sound in dry air is more than the speed of sound in moist air
The velocity of sound is ________ the pressure of gas
Adirectly proportional to
Binversely proportional to
Cindependent of
Dthe speed of light divided
The _________ of the source is the luminous flux per unit area of the source
Aluminous emittance
Bluminous efficiency
Cluminous intensity
Dillumination
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
In opaque material,
Alight is able to pass through
Bthe refracted energy is absorbed within a very thin layer and converted to heat
Clight is partially absorbed
Dthe refracted energy is absorbed within a thick layer and converted to heat
In translucent material,
Alight is able to pass through
Bthe refracted energy is absorbed within a very thin layer and converted to heat
Clight is partially absorbed
Dthe refracted energy is absorbed within a thick layer and converted to heat