Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
The wave equation
16 practice questions
Practice questions
1–10 of 16
Question 1
1 mark · Easy
Answer and see the solution →State the equation that links wave speed (), frequency (), and wavelength ().
Question 2
2 marks · Easy
Answer and see the solution →A light wave has a frequency of 5.0 × 10 Hz and a wavelength of 6.0 × 10 m. Calculate the speed of the wave.
Question 3
1 mark · Easy
Answer and see the solution →State the relationship between frequency () and time period () for a wave.
Question 4
2 marks · Easy
Answer and see the solution →A water wave has a time period of 0.2 s. Calculate its frequency.
Question 5
2 marks · Easy
Answer and see the solution →What happens to the wavelength of a wave if its frequency is halved, but its speed stays the same? Explain your answer.
Question 6
3 marks · Easy
Answer and see the solution →A sound wave travels in air at a speed of 340 m/s.
(a)[2 marks]Calculate the wavelength if the frequency is 850 Hz.
(b)[1 mark]State the unit for wavelength.
Question 7
3 marks · Easy
Answer and see the solution →A radio wave travels at 3.0 × 10 m/s. The wavelength is 1500 m.
(a)[2 marks]Calculate the frequency of the radio wave.
(b)[1 mark]State whether this wave is an example of an electromagnetic or a sound wave.
Question 8
1 mark · Easy
Answer and check →Which of the following pairs could describe a wave with a speed of 16 m/s?
- A.frequency = 4 Hz, wavelength = 4 m
- B.frequency = 2 Hz, wavelength = 8 m
- C.frequency = 8 Hz, wavelength = 4 m
- D.frequency = 2 Hz, wavelength = 4 m
Question 9
4 marks · Normal
Answer and see the solution →A student uses a ripple tank to produce water waves. The motor is set so that the frequency of the waves is 5 Hz, and each wave has a wavelength of 0.18 m.
(a)[1 mark]State the equation linking wave speed, frequency, and wavelength.
(b)[2 marks]Calculate the speed of these water waves.
(c)[1 mark]Give the unit for wave speed.
Question 10
3 marks · Normal
Answer and see the solution →A sound wave has a time period of 0.005 s.
(a)[1 mark]State the relationship between frequency and time period.
(b)[2 marks]Calculate the frequency of the sound wave.