A small cylindrical soft iron piece is kept in a galvanometer so that�

1.	A small cylindrical soft iron piece is kept in a galvanometer so that [MP PMT 2001]
A.	A radial uniform magnetic field is produced
B.	A uniform magnetic field is produced
C.	\[2\pi \sqrt{\frac{ML}{\eta }}\]
D.	All of these
Answer» E.

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A small cylindrical soft iron piece is kept in a galvanometer so that [MP PMT 2001]

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