| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.HL.TZ2.17 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 17 | Adapted from | N/A |
Question
A point source of sound is moving to the right at constant speed. The source emits sound waves of constant frequency. The speed of the source is less than the speed of sound. Which diagram correctly shows the wavefronts of the sound?
Markscheme
A
Examiners report
Syllabus sections
Show 44 related questions
- 17N.1.HL.TZ0.30: A stationary sound source emits waves of wavelength \(\lambda \) and speed v. The source now...
- 17M.1.HL.TZ2.29: A train travelling in a straight line emits a sound of constant frequency f. An observer at...
- 17M.1.HL.TZ1.28: A train moving at speed u relative to the ground, sounds a whistle of constant frequency f as...
- 16N.2.HL.TZ0.6a: Police use radar to detect speeding cars. A police officer stands at the side of the road and...
- 16M.1.HL.TZ0.35: Which of the following...
- 16M.1.HL.TZ0.25: A train moves at constant speed whilst emitting a sound wave of frequency f0. At...
- 15M.1.HL.TZ1.14: A car horn emits sound of frequency ƒ. While the horn is sounding, the car moves in a...
- 15M.1.HL.TZ2.14: An object emitting a sound of frequency 100 Hz orbits in a horizontal circle at a rate of two...
- 15M.3.SL.TZ1.3b: A source of X-rays rotates on a turntable. Radiation of wavelength 7.5 nm is emitted by the...
- 15M.3.SL.TZ1.3a: On the diagram, sketch three successive wavefronts produced when S is moving to the left at a...
- 14M.1.HL.TZ1.19: Light of wavelength λ0 is emitted from a nearby galaxy. The light is received on Earth and...
- 14M.1.HL.TZ2.17: The diagram shows a train travelling in a straight line at constant speed v, as it approaches...
- 14M.2.HL.TZ1.4a: (i) Explain, using a diagram, why \(f'\) is greater than \(f\). (ii) The frequency \(f\) is...
- 15N.1.HL.TZ0.14: A source emits sound of wavelength \({\lambda _0}\) and wave speed \({v_0}\). A stationary...
- 14N.1.HL.TZ0.14: A source of sound moves away from an observer. The observed frequency of the sound differs...
- 14N.3.SL.TZ0.3b: Determine the speed of the mosquito.
- 14N.3.SL.TZ0.3a: The maximum frequency recorded is 751 Hz and the minimum frequency recorded is 749 Hz....
- 14M.2.HL.TZ2.4c: The pipe is held stationary by the crane and an observer runs towards the pipe. Outline how...
- 14M.2.HL.TZ2.4b: A hollow pipe open at both ends is suspended just above the ground on a construction...
- 14M.3.SL.TZ2.2a: Describe what is meant by the Doppler effect.
- 14M.3.SL.TZ2.2b: (i) Determine the minimum frequency of the sound heard by the observer. (ii) ...
- 11N.1.HL.TZ0.16: A fire engine with its siren sounding approaches and passes a stationary observer. The...
- 12N.1.HL.TZ0.17: A siren on an ambulance emits sound of frequency f. The speed of sound in still air is v....
- 13N.1.HL.TZ0.14: An ambulance emits a sound of frequency f as it travels along a straight road between...
- 13M.1.HL.TZ1.14: A sample of hydrogen on Earth emits a spectral line that is measured by an Earth observer to...
- 11M.1.HL.TZ2.16: A...
- 13M.3.SL.TZ1.2a: Determine the wavelength of the radio wave as measured by the observer on Earth.
- 13M.1.HL.TZ2.15: A stationary source of sound emits sound of frequency f. A moving observer measures the sound...
- 12M.2.HL.TZ1.4a: Calculate the frequency measured by an observer when (i) the observer is stationary and the...
- 12M.2.HL.TZ1.4b: When both source and observer are stationary the wavelength is λ0 and the wavespeed is...
- 12M.3.SL.TZ1.3a: Describe the Doppler effect.
- 12M.3.SL.TZ1.3b: A spectral line from a source on Earth has a frequency of 4.672×1014 Hz. When this same line...
- 12M.2.HL.TZ2.12b: Due to the Doppler effect, light from distant galaxies is often red-shifted. (i) Describe,...
- 12N.3.SL.TZ0.2b: The frequency of the note emitted by the siren is 400 Hz. After the fire engine has passed,...
- 12N.3.SL.TZ0.2a: A fire engine is travelling at a constant velocity towards a stationary observer. Its siren...
- 13N.2.HL.TZ0.7f: Describe what is meant by the Doppler effect.
- 13N.2.HL.TZ0.7g: One of the lines in the spectrum of atomic hydrogen has a frequency of 4.6×1016Hz as measured...
- 13N.3.SL.TZ0.2b: An ambulance is travelling at a speed of 28.0 ms–1 along a straight road. Its siren emits a...
- 13N.3.SL.TZ0.2a: Describe what is meant by the Doppler effect as it relates to sound.
- 11M.3.SL.TZ1.2a: Explain, using a diagram, any difference between ƒ and ƒ'.
- 11M.3.SL.TZ1.2b: The frequency ƒ is 3.00×102Hz. An observer moves towards the stationary car at a constant...
- 09M.1.HL.TZ1.17: During a journey an observer travels at constant speed towards, and then goes beyond, a...
- 10M.1.HL.TZ1.19: Which of the following wave phenomena is associated with blood flow measurements? A. ...
- 10N.1.HL.TZ0.18: A source of sound approaches a stationary observer. The speed of the emitted sound and its...
