DP Physics (first assessment 2025)

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Question 21M.1A.SL.TZ1.29

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ1.29
Level SL Paper 1A Time zone TZ1
Command term Question number 29 Adapted from N/A
29.
[Maximum mark: 1]
21M.1A.SL.TZ1.29

On approaching a stationary observer, a train sounds its horn and decelerates at a constant rate. At time t the train passes by the observer and continues to decelerate at the same rate. Which diagram shows the variation with time of the frequency of the sound measured by the observer?

[1]

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D

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