Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Properties of Waves
122 practice questions
Topics covered
Practice questions
71–80 of 122
Question 71
2 marks · Easy
Answer and see the solution →A light wave travels at a speed of m/s and has a frequency of Hz. Calculate the wavelength of the light wave.
Question 72
2 marks · Easy
Answer and see the solution →In a ripple tank experiment, the frequency of the waves is increased while the speed of the waves remains the same. Explain what happens to the wavelength of the waves.
Question 73
1 mark · Easy
Answer and check →Which of the following will increase if the frequency of a wave increases but its speed stays constant?
- A.The time for one wave to pass
- B.The wavelength
- C.The energy carried per wave
- D.The number of waves passing per second
Question 74
3 marks · Easy
Answer and see the solution →A boat produces waves in a harbour. Each wave crest is 7 metres apart and 4 waves pass a fixed point every 14 seconds.
(a)[1 mark]Calculate the frequency of the waves.
(b)[2 marks]Calculate the speed of the waves.
Question 75
1 mark · Easy
Answer and see the solution →What term is used for the distance from one wave crest to the next?
Question 76
2 marks · Easy
Answer and see the solution →A science teacher says, “If you halve the frequency of a wave and keep its speed the same, you double the wavelength.” Explain why this is correct.
Question 77
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 78
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 79
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 80
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.