Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Wavelength and frequency
16 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
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 2
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).
Question 3
1 mark · Normal
Answer and see the solution →Write down the equation that links wave speed, frequency and wavelength.
Question 4
2 marks · Normal
Answer and see the solution →Describe what is meant by the frequency of a wave.
Question 5
2 marks · Normal
Answer and see the solution →A student uses a ripple tank to produce waves with a wavelength of 0.04 m. The tank's motor produces 25 waves every second. Calculate the speed of the water waves.
Question 6
2 marks · Normal
Answer and see the solution →A radio wave has a frequency of 6 × 10^8 Hz and travels at a speed of 3 × 10^8 m/s. Calculate its wavelength.
Question 7
3 marks · Normal
Answer and see the solution →A student states, 'If the frequency of water waves in a ripple tank is doubled, the speed of the waves will also double.'
Explain whether this statement is correct.
Question 8
2 marks · Normal
Answer and see the solution →Describe two observations that show how increasing the frequency of a ripple tank motor changes the pattern of waves seen.