Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Waves
356 practice questions
Topics covered
Practice questions
201–210 of 356
Question 201
4 marks · Normal
Answer and see the solution →A percussionist strikes a drum repeatedly at a constant rate, producing sound waves.
(a)[2 marks]State whether sound waves in air are longitudinal or transverse and explain your answer.
(b)[2 marks]The time between drum beats is . Calculate the frequency of the sound waves produced by the drum.
Question 202
5 marks · Normal
Answer and see the solution →The diagram shows a ray of light entering a glass block from air at an angle.
Refraction of a light ray entering glass The angle between the incident ray and the normal is 35°.
(a)[2 marks]Name the phenomenon shown by the light ray at the air-glass boundary and explain what causes it to occur.
(b)[2 marks]Describe what happens to the speed and direction of the light ray as it enters the glass.
(c)[1 mark]Draw and label on the diagram: - the angle of incidence - the angle of refraction.
Question 203
4 marks · Normal
Answer and see the solution →A car horn is sounding as the car approaches and then passes you while you stand at the roadside.
(a)[3 marks]Describe what happens to the pitch of the sound you hear as the car approaches, passes you, and moves away. Explain your answer using wave ideas.
(b)[1 mark]What is the name of this effect, and does it happen for all types of waves?
Question 204
4 marks · Normal
Answer and see the solution →The graph below shows the displacement of a point on a string as a wave passes along it.
Wave displacement versus time (a)[1 mark]What is the amplitude of the wave shown on the graph?
(b)[1 mark]Determine the time period of the wave.
(c)[2 marks]Calculate the frequency of the wave.
Question 205
1 mark · Easy
Answer and see the solution →State one use of gamma rays apart from treating cancer.
Question 206
1 mark · Easy
Answer and check →Which device can be sterilised using gamma rays?
- A.Surgical scissors
- B.Rubber eraser
- C.Television remote
- D.Plastic spoon at a picnic
Question 207
1 mark · Easy
Answer and see the solution →State one possible harm that gamma rays can cause to living cells.
Question 208
2 marks · Easy
Answer and see the solution →Explain why gamma rays are suitable for treating cancer.
Question 209
1 mark · Easy
Answer and see the solution →Name the type of screen or apron that can protect people from gamma rays.
Question 210
2 marks · Easy
Answer and see the solution →Give two reasons why gamma rays are considered dangerous.