Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Wavelength and frequency
15 practice questions
Practice questions
1–7 of 7 · Normal
Question 1
4 marks · Normal
Answer and see the solution →A student is investigating waves in a rope by creating pulses at one end and measuring their properties.
(a)[1 mark]State the equation that links wave speed, frequency, and wavelength.
(b)[2 marks]The wave in the rope has a frequency of 5 Hz and a wavelength of 0.8 m. Calculate the speed of the wave.
(c)[1 mark]State the unit of frequency.
Question 2
3 marks · Normal
Answer and see the solution →A musical instrument generates a sound wave with a speed of 340 m/s and a wavelength of 0.85 m.
Calculate the frequency of the sound produced by the instrument.
Question 3
3 marks · Normal
Answer and see the solution →A ripple tank is set up to demonstrate that increasing the frequency of waves changes the observed pattern.
Describe what happens to the wavelength of the water waves when the frequency is increased, and explain your answer using the wave equation.
Question 4
1 mark · Normal
Answer and check →Which of the following best describes 'wavelength'?
- A.The number of waves produced per second.
- B.The distance between one crest and the next.
- C.The number of crests passing a point each second.
- D.The height of the wave from crest to trough.
Question 5
2 marks · Normal
Answer and see the solution →A student uses a ripple tank and counts 30 wave crests passing a fixed point in 10 seconds. What is the frequency of the waves?
Question 6
2 marks · Normal
Answer and see the solution →Give the scientific name for the time taken for one complete wave to pass a given point, and state its standard SI unit.
Question 7
3 marks · Normal
Answer and see the solution →Ocean waves travel at 12 m/s and have a frequency of 0.2 Hz.
Calculate the wavelength of the ocean waves. Give your answer with the correct unit.