What consists of various wavelengths of light emitted by an excited substance?
AExcited spectrum
BLight spectrum
CAbsorption spectrum
DEmission spectrum
ESAS · Question Bank
Physics
236 of 236 questions match · page 8 of 12. Answer in your head first, then check the solution.
What consists of various wavelengths of light absorbed when white light is passed through it
AExcited spectrum
BLight spectrum
CAbsorption spectrum
DEmission spectrum
If the forces acting on a falling body balance one another, the body continues to fall at a constant velocity. What is this constant velocity called?
AInstantaneous velocity
BFree-falling velocity
CGravitational velocity
DTerminal velocity
The third law of motion is also known as ________
ALaw of acceleration
BLaw of inertia
CLaw of interaction
DLaw of momentum
Air exerts a force that is opposite to the car's motion. What is this force called?
AReverse effective force
BTerminal force
CDrag force
DAerodynamic force
What do light, radiowaves, microwaves, and X-rays have in common?
AThese waves were predicted by only one person, James Maxwell
BThese do not need a medium to travel in
CThese waves are all mechanical waves
DThese waves are all serendipitous waves
What refers to the measure of the energy of sound?
AIntensity
BLoudness
CPitch
DSone
Why is sound wave travel faster in water than in air?
ABecause water has greater density than air
BBecause water has greater bulk modulus than air
CBecause water has more in terms of number of molecules than air
DBecause water has more in volume than air
What part of the human ear where sound energy is converted into electrical energy?
AEardrum
BCochlea
CTympanum
DEar canal
What is the wavelength band of orange?
A550nm - 600 nm
B600nm - 650 nm
C650nm - 700nm
D500nm -550nm
What is the wavelength band in nanometer of visible light?
A350nm - 700 nm
B350nm - 800 nm
C300nm - 700nm
D300nm -800nm
What term is used to describe the angular opening of sphere that encloses the mirror?
AAngle of curvature
BFocal point
CAperture
DVertex
What makes the sun visible even before it is in line with the horizon?
ADiffraction
BReflection
CRefraction
DDiffusion
When white light is passed through a prism, the different lights are bent to varying degrees and are dispersed into different colors. Which of these colors bends the most?
AViolet
BRed
COrange
DGreen
The formation of rainbow in the sky is due to _________
Adiffraction
Breflection
Crefraction
Ddiffusion
What refers to the defect in lenses which causes unequal refraction of the different colors?
AChromatic diffraction
BChromatic polarization
CChromatic aberration
DChromatic dispersion
What is diffraction?
AIt is the scattering of white light behind an obstruction
BIt is the separation of white light into its component colors
CIt is the merging of component colors into white light
DIt is the absorption of white light in the atmosphere
What is dispersion?
AIt is the scattering of white light behind an obstruction
BIt is the separation of white light into its component colors
CIt is the merging of component colors into white light
DIt is the absorption of white light in the atmosphere
What are the primary colors?
ABlue, Red, and White
BLight colors
CColors which when combined produce white light
DBlue, Red, and Green
What device is used to measure atmospheric pressure and is consists of a glass tube sealed at one end and filled with mercury and a slide with a vernier scale?
ABourdon gauge
BAneroid barometer
CMercury barometer
DManometer