1.

A short magnet of moment 6.75 Am2 produces a neutral point on its axis. If horizontal component of earth's magnetic field is \[5\times {{10}^{-5}}Wb/{{m}^{2}}\], then the distance of the neutral point should be                                     [SCRA 1994]

A.            10 cm                                      
B.            20 cm
C.            30 cm                                      
D.            40 cm
Answer» D.            40 cm


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