The needle of a deflection galvanometer shows a deflection of $60^o $ due to a short bar magnet at a certain distance in $\tan A$ position. If the distance is doubled, the deflection is
The needle of a deflection galvanometer shows a deflection of $60^o $ due to a short bar magnet at a certain distance in $\tan A$ position. If the distance is doubled, the deflection is
- A
${\sin ^{ - 1}}\left( {\frac{{\sqrt 3 }}{8}} \right)$
- B
${\cos ^{ - 1}}\left( {\frac{{\sqrt 3 }}{8}} \right)$
- C
${\tan ^{ - 1}}\left( {\frac{{\sqrt 3 }}{8}} \right)$
- D
${\cot ^{ - 1}}\left( {\frac{{\sqrt 3 }}{8}} \right)$
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