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Date November 2018 Marks available 1 Reference code 18N.1.SL.TZ0.17
Level Standard level Paper Paper 1 Time zone 0 - no time zone
Command term Question number 17 Adapted from N/A

Question

Two strings of lengths L1 and L2 are fixed at both ends. The wavespeed is the same for both strings. They both vibrate at the same frequency. L1 vibrates at its first harmonic. L2 vibrates at its third harmonic.

What is L1L2?

 

A.   13

B.   1

C.   2

D.   3

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Core » Topic 4: Waves » 4.5 – Standing waves
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