Flashcards
Topic 4: Waves
Cards in this deck (23)
- 1Topic 4: WavesDescribe Simple Harmonic Motion giving its equation
- 2Describe the energy changes in a i) pendulum bob ii) mass on a spring iii) vibrating atomDefine 'phase difference'
- 3Define 'undamped system'Contrast standing travelling waves
- 4Describe what is shown by a displacement-time graphContrast longitudinal and transverse waves
- 5Describe what is shown by a displacement-position graphDefine 'Intensity' giving its equation
- 6Give the speed of lightGive the EM spectrum and the orders of magnitude of their wavelengths
- 7Explain how sound waves emergeDefine the terms:
i) Compression
ii) Rarefaction - 8Give the relationship between intensity and amplitudeGive and explain the relationship between intensity and a distance r from a point source dispersing energy in all directions
- 9Give the principle of superpositionExplain what polarisation does and the effect of one polaroid on the intensity of the unpolarised light
- 10Describe what an 'analyser' is and its effects when: i) It's in the same plane as the polarised light ii) It's plane is rotated 90' from the polarised light plane iii) It's plane is rotated any other angleGive Malus' Law
- 11Describe the relationship between reflection and polarisationList the changes that take place when a wave moves to a 'more dense' medium
- 12List the changes that take place when a wave moves to a 'less dense' mediumDescribe the significance of Malus' Law and give the law
- 13Define 'refractive index' using its equation. Give the assumption made concerning airGive and briefly describe some applications of polarisation
- 14Give Snell's LawGive and briefly describe some applications of polarisation
- 15Define the 'critical angle' and give a key criteria for it to take placeDescribe 'total internal reflection' and give a key criteria for it to take place
- 16Give two ways to increase the visibility and effect of diffraction around a barrierDescribe the terms:
i) In phase
ii) Out of phase
iii) Antiphase - 17In terms of superposition, explain what causes i) Constructive interference ii) Destructive interferenceDefine 'coherent'. Describe what this means specifically in terms of sound waves; light waves.
- 18Describe what the graphs that typically accompany single-slit/ double-slit diffraction showGive Huygen's principle and explain how this causes the development of bright and dark fringes/ variation of intensity with position
- 19Explain the role of the double slit in the Young's double slit experiment setupGive the relationships between path difference and
i) Constructive interference
ii) Destructive interference - 20Give the equation relating fringe separation and wavelengthExplain how standing waves come about
- 21Give some factors which the resonant frequencies depend onDescribe the following
i) Boundary conditions
ii) Nodes
iii) Antinodes - 22Contrast and give the general wavelength-harmonic rules for i) Closed-closed/ Open-open systems ii) Open-closed systemsExplain the difference between a closed end pipe and an open end pipe in terms of vibrations of air particles
- 23Give the distance (in terms of wavelengths) which separates nodes
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- Flashcards on Topic 4: Waves, created by tofunmadey on 18/07/2016.
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