Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Wavelength and frequency
16 practice questions
Practice questions
1–10 of 16
Question 1
1 mark · Easy
Answer and see the solution →State what is meant by the wavelength of a wave.
Question 2
1 mark · Easy
Answer and check →Which of the following gives the correct relationship between wave speed (v), frequency (f), and wavelength () for any wave?
- A.v = f
- B.v = f +
- C.v = f /
- D.v = / f
Question 3
2 marks · Easy
Answer and see the solution →A student increases the frequency of waves made in a stretch of rope while keeping the speed the same. Explain what happens to the wavelength.
Question 4
3 marks · Easy
Answer and see the solution →Waves in a long spring travel with a speed of 8 m/s and have a frequency of 2 Hz.
(a)[2 marks]Calculate the wavelength of the waves.
(b)[1 mark]State the unit for wavelength.
Question 5
2 marks · Easy
Answer and see the solution →A wave has a frequency of 50 Hz and a wavelength of 0.12 m. Calculate the speed of this wave.
Question 6
1 mark · Easy
Answer and see the solution →Give the unit used for frequency.
Question 7
1 mark · Easy
Answer and see the solution →Describe what happens to the wavelength of a water wave when its frequency is doubled, with speed kept constant.
Question 8
3 marks · Easy
Answer and see the solution →A fishing float moves up and down as waves pass beneath it. The float completes one up-and-down motion every 0.8 seconds.
(a)[2 marks]Calculate the frequency of the wave.
(b)[1 mark]Explain what is meant by the term 'frequency' in this context.
Question 9
2 marks · Normal
Answer and see the solution →A sound wave travels through air at a speed of 330 m/s. If its frequency is 110 Hz, calculate the wavelength of this sound wave.
Question 10
3 marks · Normal
Answer and see the solution →The diagram shows a ripple tank setup used in a laboratory to investigate water waves.
Diagram of a ripple tank with a vibrating bar, water surface, lamp above, and waves on the water. (a)[1 mark]State the effect on the wavelength of waves if the motor produces waves at a higher frequency.
(b)[2 marks]Explain your answer to part (a).