Light and Sound Flashcards
dec slit width or increased wavelength will ___ the band pattern so ___distances are present bw dark and light bands
widen, greater
inc slit width or dec wavelength, will __ the distance
reduce
both ___ and ____ will influence the angle of propagation with dark and light bands in pattern of diffracted light
slid width and wavelength
With thin film interference, like layer of oil on water, whenever two medium next to each other, there will always be
light waves reflected by upper and lower boundaries of thin film. depend on ratio of thickness of film and wavelength
thin film interference can help explain the ___ array
multicolored
reducing the thickness of lens periphery will lead to ___ refraction of light
less
to correct nearsightedness need
diverging lens (concave correcting)
when 2 materials are mixed, one will ___ heat and the other ___ heat
lose, gains
when heat moves from hot plate to water bath via stationary physical conduct
conduction
heat moves from water bath to probe via movement of fluid
convection
doppler: if truck moving to person closer they experience, ___ frequency and ___ wavelength
higher, lower
when instantaneous velocity is 0 that means, ____
no frequency shift, no doppler shift, unchanged
real image forms ___ mirror and virtual image forms ___ mirror
in front, behind
___ mirror create a real image positoned outside person focal length and ___ creates virtual image
concave (converging), convex (diverging)
left of the spectrum light, has ___ wavelength and example is
longer, radio, mirowaves,
order of light spectrum
radio, microwaves, infrared, colour, UV, X ray, Gamma
left to right spectrum: explain energy, frequency, wavelength
inc energy and frequency, and lower wavelength
in unpolarized light, electric field oscillates in __ directions
all
in linearly polarized light electric field oscillates in only
one direction
longer wavelength (infrared) causes ___ refraction
less
shorter wavelength (UV)causes ____ refraction
greater
when work is much less than energy (hf) then electrons ___ high velocity
eject
when work is greater than hf, ____
no electrons are ejected
when work is just less hf, then
electrons are ejected at LOW velocity
