IGS Ph W hmk2

The diagram shows the apparatus used to investsigate the waves in a stretched string.

The frequency of the signal generator is adjusted so that the wave shown in the diagram is seen.

The wavelength of the wave was measured as 80 cm.

What piece of apparatus would have been suitable for measuring this wavelength?

What is the equation which links frequency, wavelength and wave speed?

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The wave on the string shown has a frequency of 55 Hz and a wavelength of 80 cm.

Calculate the wave speed of the wave shown.

Choose one answer.

• 40 m/s

• 44m/s

• 50 m/s

• 1.45 m/s

The frequency of the signal generator is increased. This makes th wavelength of the wave change.

The wave speed stays the same.

How could the apparatus be adjusted to show one complete wave without reducing the frequency?

• Move the bridge to the left.

• Move the bridge to the right.

• Decrease the mass hanging on the string.

• A shows a trough & B shows a crest

• A shows a crest & B shows a trough

Which letter shows the amplitude of the wave?

• P

• Q

• R

• S

Which letter shows the wavelength of the wave?

• P

• Q

• R

• S

What wave property is shown by the label "X" on the diagram?

Choose the things that affect the speed of the wave.

• Amplitude

• Wavelength

• Frequency

• Water depth & temperature