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EAMCET Engineering 2010 Solved Paper
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© examsnet.com
Question : 97
Total: 160
The frequncy of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments
M
1
and
M
2
is
6
Hz
when like poles are tied and it is
2
Hz
when the unlike poles are tied together, then the ratio
M
1
:
M
2
is
4
:
5
5
:
4
1
:
3
3
:
1
Validate
Solution:
In the sum and difference method of vibration magnetometer,
M
1
M
2
=
T
2
2
+
T
1
2
T
2
2
−
T
1
2
T
1
=
1
n
1
=
1
6
s
T
2
=
1
n
2
=
1
2
s
M
1
M
2
=
1
4
+
1
36
−
1
4
+
9
+
1
36
9
−
1
=
10
8
=
5
4
M
1
:
M
2
=
5
:
4
© examsnet.com
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