If 
and 
are the deflections obtained by placing small magnet on the arm of a deflection magnetometer at the same distance from the compass box in 
and 
positions of the magnetometer respectively then the value of 
will be approximately
A
1
B
2
C
1/2
D
Text Solution
Verified by ExpertsThe correct answer is:
B
In 
position 
In 
position 
. (ii)
Dividing equation (i) by equation (ii) 
.
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