Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Waves
356 practice questions
Topics covered
Practice questions
161–170 of 356
Question 161
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 162
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 163
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 164
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 165
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.
Question 166
1 mark · Easy
Answer and see the solution →What is the name given to the change in direction of a wave as it passes from one material into another?
Question 167
1 mark · Easy
Answer and check →Which of the following best describes what happens when a water wave travels from deep water to shallow water at an angle to the boundary?
- A.The wave slows down and bends.
- B.The wave speeds up and bends.
- C.The wave changes direction but not speed.
- D.The wave stays the same speed and direction.
Question 168
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the Law of Reflection.
(b)[1 mark]What is the angle of reflection when the angle of incidence is ?
(c)[1 mark]Draw a labelled diagram to show a wave reflecting from a flat barrier. Include the normal, angle of incidence, and angle of reflection.
Question 169
2 marks · Easy
Answer and see the solution →Explain, using wave ideas, why a straight pencil appears bent when it is placed at an angle in a glass of water.
Question 170
1 mark · Easy
Answer and check →What happens to the speed of light as it passes from air into glass?
- A.It increases
- B.It decreases
- C.It stays the same
- D.It becomes zero