Africa Exams
Where Preparation Meets Success
Home
Botswana
Botswana PSLE Papers
Botswana JCE Papers
Botswana BGCSE Papers
Ghana
Ghana BECE Exams
Kenya
Kenya KCPE Papers
Kenya KCSE Papers
Kenya KASNEB Papers
Nigeria
WAEC Exams
JAMB Exams
Rwanda
Rwanda Primary Papers
Rwanda Secondary Papers
Uganda
Uganda PLE Papers
Uganda UCE Papers
Uganda UACE Papers
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Contact Us
Our Apps
Privacy
+
-
Test Index
WAEC Physics 2017 Paper
Show Para
Hide Para
Share question:
© africaexams.com
Question : 30
Total: 50
The diagram above illustrates a wave setup between two fixed ends 4.0m apart. If the speed of the wave is 1.0
m
s
−
1
, its wavelength and frequency respectively are
1m; 0.25Hz
2m; 0.25Hz
2m; 0.50Hz
4m; 0.50Hz
Validate
Solution:
For the 4th harmonic,
L
=
2
λ
4
m
=
2
λ
implies
λ
=
4
m
2
=
2
m
Recall,
v
=
f
λ
1
=
f
×
2
implies
f
=
1
2
= 0.50Hz
© africaexams.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Prev Question
Next Question
