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Question 21N.2.SL.TZ0.c.ii

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

A standing sound wave is established in a tube that is closed at one end and open at the other end. The period of the wave is T. The diagram represents the standing wave at t=0 and at t=T8. The wavelength of the wave is 1.20 m. Positive displacements mean displacements to the right.

A particle in the tube has its equilibrium position at the open end of the tube.
State and explain the direction of the velocity of this particle at time t=T8.

[2]

Markscheme

to the right ✓

displacement is getting less negative

OR

change of displacement is positive ✓

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