DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ1.17

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ1.17
Level SL Paper 1A Time zone TZ1
Command term Question number 17 Adapted from N/A
17.
[Maximum mark: 1]
22M.1A.SL.TZ1.17

A standing wave is formed on a string. P and Q are adjacent antinodes on the wave. Three statements are made by a student:

I.   The distance between P and Q is half a wavelength.
II.  P and Q have a phase difference of π rad.
III. Energy is transferred between P and Q.

Which statements are correct?

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

A

Examiners report

This question was generally well answered by HL candidates. Given the number of candidates who (incorrectly) chose statement III "Energy is transferred between P and Q" as true, this question might be a useful review to identify the properties of standing waves.

Syllabus sections