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JEE Main Physics Class 12 Communication Systems Questions
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© examsnet.com
Question : 2
Total: 103
For an amplitude modulated wave the minimum amplitude is
3
V
, while the modulation index is
60
%
. The maximum amplitude of the modulated wave is :
[6-Apr-2023 shift 2]
10
V
12
V
15
V
5
V
Validate
Solution:
👈: Video Solution
Given, modulation index
=
60
%
=
0.6
A
m
A
c
=
0.6
1
Using componendo - dividendo, we can write
A
m
+
A
c
A
m
−
A
c
=
0.6
+
1
0.6
−
1
=
1.6
−
0.4
A
m
+
A
c
=
1.6
−
0.4
×
(
A
m
−
A
c
)
=
1.6
−
0.4
×
(
−
3
)
=
12
V
© examsnet.com
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