Flashcards
Waves part 1
Flashcards do conjunto (17)
- 1Define frequencyThe number of waves passing through a point per second [ Hertz]
- 2define wavelengththe distance between two adjacent peaks on wave
- 3define amplitudethe maximum of wave from its equillibrum position
- 4formula for time period using frequencyF=1/T
- 5what is phase difference and what is it measured in.How much a particle / wave lags behind another. measured in radians, degrees or fractions of a cycle
- 6what is longitudinal wavewave in which the oscillations are parallel to the direction of energy transfer.
there are refractions (areas of low pressure) and compressions (areas of high pressure - 7what is a transverse wave ( example)a wave with the oscillations being perpendicular to the direction of energy transfer ( EM waves )
- 8how fast do electromagnetic waves travel3 * 10^8 m/s
- 9True or false? The magnetic and electric field in an electromagnetic wave are parallel to each otherFalse they are perpendicular to each other.
- 10what does a polarisation filter doonly allows oscillations in one plane
- 11how is polarisation used as evidence of the nature of transverse wavespolarisation can only occur if wave's oscillations are perpendicular to it's direction of travel
- 12How is polarisation used in antennasTV and radio signals are usually plane-polarised by the orientation of the rods on the transmitting aerial , so the receiving aerial must be aligned in the same plane of polarisation to receive the signal at full strength.
- 13what is a stationary wavea wave which transfers no energy and whose positions of maximum and minimum amplitude are constant
- 14what is a nodea point on a stationary where the displacement is 0
- 15what is an antinodea point on a stationary wave with maximum displacement
- 16what are the conditions for a stationary wave to be produced- The wave must be of same wavelength and frequency with similar amplitude.
-Two progressive wave must be travelling in opposite directions at the same time in the same medium - 17How are stationary waves producedA stationary wave is formed from the superposition of 2 progressive waves, travelling in opposite directions in the same medium with the same frequency wavelength and similar amplitude.
-Where the waves meet in phase, constructive interference occurs so antinodes form.
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- A level Physics FlashCards sobre Waves part 1, criado por Jahi Greg Djoumbissie em 12-03-2025.
- Criado por
- Jahi Greg Djoumbissie
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