DP Physics (last assessment 2024)

Question 21N.2.HL.TZ0.2c.i

Date	November 2021	Marks available	[Maximum mark: 1]	Reference code	21N.2.HL.TZ0.2c.i
Level	HL	Paper	2	Time zone	TZ0
Command term	State	Question number	c.i	Adapted from	N/A

c.i.

[Maximum mark: 1]

21N.2.HL.TZ0.2c.i

A longitudinal wave travels in a medium with speed 340 m s⁻¹. The graph shows the variation with time t of the displacement x of a particle P in the medium. Positive displacements on the graph correspond to displacements to the right for particle P.

Another wave travels in the medium. The graph shows the variation with time t of the displacement of each wave at the position of P.

(c.i)

State the phase difference between the two waves.

[1]

Markscheme

«±» $\frac{π}{2} / 90 °$ OR $\frac{3 π}{2} / 270 °$ ✓

Syllabus sections

Core

Core » Topic 4: Waves » 4.1 – Oscillations

Core » Topic 4: Waves

Question 21N.2.HL.TZ0.2c.i

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