Test
Physics- Waves
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Preguntas del test (31)
1What do waves carry from one place to another?
- AEnergy
- BMatter
- CParticles
2What is the wavelength of a wave?
- AThe distance between periods
- BThe distance between phases
3What is the frequency of a wave?
- AThe number of waves passing a point
- BThe time it takes for a wave to pass a point
4What is the amplitude of a wave?
- AThe distance the wave travels
- BThe maximum displacement of the wave
- CThe minimum displacement of the wave
5The formula for frequency is 1/time period
- AVerdadero
- BFalso
6What is the wave equation?
- AWavelength = Wave Speed x Frequency
- BFrequency = Wave Speed x Wavelength
- CWave Speed = Frequency x Wavelength
7The direction of vibration for transverse waves is [blank_start]perpendicular[blank_end] to the direction of travel where as for longitudinal waves it is [blank_start]parallel[blank_end] to the direction travel
- Aperpendicular
- Bparallel
- Cparallel
- Dperpendicular
8The phase is [blank_start]a specific point on a wave[blank_end]
- Aa specific point on a wave
9The phase angle can also be written as fractions of wavelengths, degrees or radians;
360 degrees = [blank_start]1[blank_end] wavelength = [blank_start]2n[blank_end] radians
180 degrees = [blank_start]1/2[blank_end] wavelength = [blank_start]1n[blank_end] radians
90 degrees = [blank_start]1/4[blank_end] wavelength = [blank_start]1/2n[blank_end] radians
270 degrees = [blank_start]3/4[blank_end] wavelengths = [blank_start]3/2[blank_end] radians- A1
- B1/2
- C1/4
- D3/4
- E2n
- F1/2n
- G3/2n
- H1n
- I1/4
- J1
- K1/2
- L3/4
- M3/2n
- N2n
- O1n
- P1/2n
- Q1
- R3/4
- S1/4
- T1/2
- U1/2n
- V2n
- W3/2n
- X1n
- Y1/2
- Z1
- AA3/4
- AB1/4
- AC3/2n
- AD1n
- AE2n
- AF1/2n
10How to standing waves form?
A wave is [blank_start]reflected[blank_end] and [blank_start]superposition occurs[blank_end], [blank_start]producing nodes and antinodes[blank_end]- Areflected
- Bsuperposition occurs
- Cproducing nodes and antinodes
11A node is [blank_start]an area of no displacement[blank_end]
- Aan area of no displacement
12An antinode is [blank_start]an area of maximum displacement[blank_end]
- Aan area of maximum displacement
13What is the distance between the nodes for a standing waves?
- A1 wavelength
- B1/2 wwavelength
- C2 wavelengths
14Diffraction is [blank_start]the spreading out of waves[blank_end] [blank_start]around an obstacle or through a gap[blank_end]
- Athe spreading out of waves
- Baround an obstacle or through a gap
15What does s diffraction pattern of laser light passing through a slit look like?
- ALots of lines, decreasing in height
- BDots that fade the further out you go
16What happens to the size and brightness of the spots if you use a smaller diffraction grating?
- AThey get smaller and dimmer
- BThey get larger and brighter
- CThey get smaller and brighter
- DThey larger and dimmer
17When the wave displacements add to make a larger displacement we call it [blank_start]constructive interference[blank_end]. When they add and cancel out to make zero displacement we call it [blank_start]destructive interference[blank_end].
- Aconstructive interference
- Bdestructive interference
- Cconstructive interference
- Ddestructive interference
18The phase difference when 2 waves are exactly in step is [blank_start]2n pi[blank_end] and the path difference is [blank_start]n[blank_end] wavelengths
When in antiphase the phase difference is [blank_start](2n+1) pi[blank_end] and the path difference is [blank_start](2n+1)wavelengths/2[blank_end]- A2n pi
- Bn
- C(2n+1) pi
- D(2n+1)wavelengths/2
19Sources of waves are said to be coherent when they have [blank_start]the same frequency[blank_end], [blank_start]a constant phase relationship[blank_end] and [blank_start]a similar amplitude[blank_end]
- Athe same frequency
- Ba constant phase relationship
- Ca similar amplitude
20Path difference is [blank_start]the difference in distance traveled[blank_end] by 2 waves arriving [blank_start]at a point from the source[blank_end]
- Athe difference in distance traveled
- Bat a point from the source
21What is the refractive index?
- AThe amount of refraction caused by the material
- BThe angle a wave is refracted by
22The formula for Snell's Law is [blank_start]n1sin1=n2sin2[blank_end]
- An1sin1=n2sin2
23The critical angle is [blank_start]the angle at which the light[blank_end] exits [blank_start]parallel to the boundary[blank_end], greater than this causes [blank_start]total internal reflection[blank_end]
- Athe angle at which the light
- Bparallel to the boundary
- Ctotal internal reflection
24Polarisation is when [blank_start]all the oscillations[blank_end] occur [blank_start]in one single plane[blank_end]
- Aall the oscillations
- Bin one single plane
25The electrons are emitted instantaneously because [blank_start]the photon[blank_end] has energy greater [blank_start]than or equal to the work function[blank_end] where as if it were a wave then [blank_start]the energy would have to build up[blank_end] to the work function so there would be [blank_start]a delay[blank_end]
- Athe photon
- Bthan or equal to the work function
- Cthe energy would have to build up
- Da delay
26The wave theory cannot explain the photoelectric effect in terms of frequency because [blank_start]low frequencies never emit electrons[blank_end], therefore there must be [blank_start]a minimum frequency[blank_end]
- Alow frequencies never emit electrons
- Ba minimum frequency
27The work function is [blank_start]the minimum amount of energy[blank_end] an electron needs in [blank_start]order to escape the surface of the metal[blank_end]
- Athe minimum amount of energy
- Border to escape the surface of the metal
28The equation for photon energy is;
Photon Energy = [blank_start]Planck's constant x Frequency[blank_end]- APlanck's constant x Frequency
29The equation for kinetic energy is;
KE = [blank_start]hf - work function[blank_end]- Ahf - work function
301eV = [blank_start]1.6 x 10^-19[blank_end]
- A1.6 x 10^-19
31Planck's constant = [blank_start]6.63 x 10^-34[blank_end]
- A6.63 x 10^-34
Información
- Descripción
- Quiz including longitudinal and transverse waves, standing waves, diffraction, interference, refraction, polarisation and the photoelectric effect
- Autor
- Eleanor Hurst
- Idioma
- English
- Visitas
- 89
- Etiquetas
- Valoración
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