Two like magnetic poles of strength $ 10$ and $40$ $ SI$ units are separated by a distance $30 \,cm$. The intensity of magnetic field is zero on the line joining them
Two like magnetic poles of strength $ 10$ and $40$ $ SI$ units are separated by a distance $30 \,cm$. The intensity of magnetic field is zero on the line joining them
- A
At a point $ 10 \,cm$ from the stronger pole
- B
At a point $20\, cm$ from the stronger pole
- C
At the mid-point
- D
At infinity
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