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AQA A-level Physics Waves on a String Mark Scheme
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Mark scheme for the corresponding document: 'AQA A-level physics Waves on a string'.
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Mark schemesA
1
[1]
D
2
[1]
A
3
[1]
C
4
[1]
A
5 [1]
C
6
[1]
C
7
[1]
B
8
[1]
C
9
[1]
C
10
[1]
D
11
[1]
A
12
[1]
Two of
13
B1
Mass or mass/unit length
B1
Tension
Length
Temperature
[2]
Page 24 of 37
, (a) 4 mm
14
B1
1
(b) 3:1; 3/1
C1
9 or 9:1
A1
2
[3]
15 amplitude: each point along wave (1)
has same amplitude for progressive wave
but varies for stationary wave (1)
phase: progressive wave, adjacent points vibrate with different phase (1)
stationary wave, between nodes all particles vibrate in phase
[or there are only two phases] (1)
energy transfer: progressive wave, energy is transferred through space (1)
stationary wave, energy is not transferred through space (1)
[5]
(a) (i) one loop shown
16 B1
(1)
(ii) 0.68 m
B1
(1)
(iii) two equal length loops shown
B1
(1)
(b) frequency increases
B1
(1)
[4]
Page 25 of 37
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