DP Physics (last assessment 2024)

Question 21M.2.HL.TZ1.c

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.HL.TZ1.c
Level	HL	Paper	2	Time zone	TZ1
Command term	State	Question number	c	Adapted from	N/A

[Maximum mark: 1]

21M.2.HL.TZ1.c

On a guitar, the strings played vibrate between two fixed points. The frequency of vibration is modified by changing the string length using a finger. The different strings have different wave speeds. When a string is plucked, a standing wave forms between the bridge and the finger.

The string is made to vibrate in its third harmonic. State the distance between consecutive nodes.

[1]

Markscheme

$\frac{62}{3} = 21 « cm »$ ✓

Syllabus sections

Core

Core » Topic 4: Waves » 4.5 – Standing waves

Core » Topic 4: Waves

Question 21M.2.HL.TZ1.c

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