3. Waves
A section of Physics, 5054
Listing 10 of 515 questions
shows circular wavefronts produced at the centre of a circular ripple tank. 8.0 cm cork B cork A Two corks, A and B, float on the water in the ripple tank. They move up and down on the surface of the water as the wave passes. The wavelength of the wave is 8.0 cm. shows how the displacement of A varies with time. +2 0.25 0.50 0.75 1.00 1.25 time / s displacement / mm –2 State the amplitude of the vibrations of A as the wave passes. amplitude = The horizontal distance between A and B is half the wavelength of the wave. On , sketch a graph to show how the displacement of B varies with time. Use to determine the frequency of the wave. frequency = The distance between the centre of the ripple tank and its edge is 40 cm. Determine the time taken by a wavefront to travel from the centre of the tank to the edge. time =
5054_s11_qp_22
THEORY
2011
Paper 2, Variant 2
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shows the wavefronts of a water wave in deep water in a ripple tank. 6.0 cm deep water The frequency of the wave in deep water is 5.0 Hz. Explain what is meant by the frequency of a wave. Determine the wavelength of the wave in deep water. Calculate the speed of the wave in deep water. speed = The wave passes from deep water into shallow water. The speed of the wave is less in shallower water. State and explain how this affects the wavelength of the wave. The wave in deep water shown in travels towards the right and enters the shallow water at an angle. The wave refracts. deep water shallow water On , draw the wavefronts in the shallow water. Sound is also a wave. Describe one difference between a sound wave and a water wave. The speed of sound in carbon dioxide gas is less than the speed of sound in air. Using this information, or otherwise, describe an experiment to show the refraction of sound waves. You may include a diagram of your apparatus.
5054_s15_qp_22
THEORY
2015
Paper 2, Variant 2
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Light is a transverse wave. The direction of vibration is perpendicular to the direction of transfer of the energy. Complete the table of to show the direction of vibration and the type of wave associated with a sound wave and with a wave on the surface of water in a ripple tank. wave direction of vibration type of wave light perpendicular to the direction of transfer of the energy transverse sound water A wave travels along a rope. shows how the height of one point on the rope varies with time as the wave passes. 0.5 1.0 1.5 2.0 2.5 time / s height / m 3.0 3.5 0.70 0.80 0.90 1.00 1.10 1.20 1.30 Determine the amplitude of the vibration at time = 0.25 s. Describe how the graph shows that the frequency of the wave is constant.
5054_s16_qp_21
THEORY
2016
Paper 2, Variant 1
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Questions Discovered
515