The areas of cross-section of three magnets of same lengths are \( ... VIDEO
The areas of cross-section of three magnets of same lengths are \( A, 2 A \) and \( 6 A \), respectively. The ratio of their magnetic moments will be
(a) \( 6: 2: 1 \)
(b) \( 1: 2: 6 \)
-(c) \( 2: 6: 1 \)
(d) \( 1: 1: 1 \)
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