DP Physics (last assessment 2024)

Question 19M.2.HL.TZ2.eii

Date	May 2019	Marks available	[Maximum mark: 1]	Reference code	19M.2.HL.TZ2.eii
Level	HL	Paper	2	Time zone	TZ2
Command term	Calculate	Question number	eii	Adapted from	N/A

eii.

[Maximum mark: 1]

19M.2.HL.TZ2.eii

Sound of frequency f = 2500 Hz is emitted from an aircraft that moves with speed v = 280 m s^–1away from a stationary observer. The speed of sound in still air is c = 340 m s^–1.

Calculate the wavelength measured by the observer.

[1]

Markscheme

$\lambda ' = \frac{{340}}{{1371}} \approx 0.24/0.25$ «m» ✔

Examiners report

Answered well with ECF often being awarded to those who answered the previous part incorrectly.

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Core

Core » Topic 4: Waves » 4.3 – Wave characteristics

Core » Topic 4: Waves

Question 19M.2.HL.TZ2.eii

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