DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ2.31

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.31
Level SL Paper 1A Time zone TZ2
Command term Question number 31 Adapted from N/A
31.
[Maximum mark: 1]
22M.1A.SL.TZ2.31

A train is sounding its whistle when approaching a train station. Three statements about the sound received by a stationary observer at the station are:

I.   The frequency received is higher than the frequency emitted by the train.
II.  The wavelength received is longer than the wavelength emitted by the train.
III. The speed of the sound received is not affected by the motion of the train.

Which combination of statements is correct?

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

B

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