Properties of the Waves

the diagram below is a graph showing how the height of water at a point in marina varies with time t as the waves pass the point. what is the correct label for W and X?

• W = amplitude

  X = period

• W = displacement

  X = wavelength

• W = amplitude

  X = wavelength

• W = displacement

  X = period

The graph shows the variation of a quantity P with a quantity Q for a sound wave travelling in air. what is P and Q be?

• P = amplitude

  Q = intensity

• P = frequency

  Q = wavelength

• P = speed

  Q = frequency

• P = wavelength

  Q = period

A wave has period T, wavelength λ and amplitude A. The wave is shown on a graph of displacement x against distance d. Which graph is correctly labelled?

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A transverse progressive wave is set up on a string. The graph shows the variation with time of displacement for a point on this string. The separation XY on the graph represents the.....1..... of the wave. X and Y have equal ....... 2....... . Which words correctly complete gaps 1 and 2?

• 1 = time period

  2 = amplitudes

• 1 = time period

  2 = displacements

• 1 = wavelength

  2 = amplitudes

• 1 = wavelength

  2 = displacements

The four graphs represent a progressive wave on a stretched string. Graphs A and B show how the displacement d varies with distance x along the string at one instant. Graphs C and D show how the displacement d varies with time t at a particular value of x.

The labels on the graphs are intended to show the wavelength λ, the period T and the amplitude a of the wave, but only one graph is correctly labelled. Which graph is correctly labelled?

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The graph shows the variation of displacement y with distance x along a progressive wave at one instant in time. What is the phase difference between points P and Q on the wave?

A sound wave passes through air.

The diagram shows the positions of the molecules of the air at one instant.

Which distance is equal to the wavelength of the wave?

• PQ

• PS

• QR

• QS

Waves in which the medium moves at the right angles to the direction of the wave is known as....

• Mechanical Wave

• Transverse Waves

• Longitudinal Waves

• Electromagnetic Waves

Indicate the interval that represents one full wavelength.

• A to C

• B to D

• A to G

• C to G