DP Physics (last assessment 2024)

Question 19N.2.SL.TZ0.a(ii)

Date	November 2019	Marks available	[Maximum mark: 2]	Reference code	19N.2.SL.TZ0.a(ii)
Level	SL	Paper	2	Time zone	TZ0
Command term	Calculate	Question number	a(ii)	Adapted from	N/A

a(ii).

[Maximum mark: 2]

19N.2.SL.TZ0.a(ii)

The solid line in the graph shows the variation with distance $x$ of the displacement $y$ of a travelling wave at t = 0. The dotted line shows the wave 0.20 ms later. The period of the wave is longer than 0.20 ms.

Calculate, in Hz, the frequency for this wave.

[2]

Markscheme

λ = 0.30 «m» ✔
$f$ = « $\frac{250}{0.30} =$ » 830 «Hz» ✔

NOTE: Allow ECF from (a)(i)
Allow ECF from wrong wavelength for MP2

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Core

Core » Topic 4: Waves » 4.2 – Travelling waves

Core » Topic 4: Waves

Question 19N.2.SL.TZ0.a(ii)

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