Why a diamagnetic substance is repelled by both the poles of the magnet and not repelled by north and attracted by south ?

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Solution

$W h e n a d i a m a g n e t i c s u b s \tan c e i s p l a c e d i n t h e m a g n e t i c f i e l d o f a m a g n e t, t h e d i a m a g n e t i c s u b s \tan c e d e v e l o p s s i m i l a r p o l e o f t h e m a g n e t i c p o l e n e a r b y a n d t h u s t h e m a g n e t i c p o l e s r e p e l t h e d i a m a g n e t i c s u b s \tan c e . I n t h e m a g n e t i c f i e l d o f m a g n e t t h e r e i s i s w e a k r e p u l s i o n o f d i a m a g n e t i c s u b s \tan c e . T h i s i s b e c a u s e b y b r i n g i n g a m a g n e t n e a r t h e d i a m a g n e t i c s u b s \tan c e, t h e s u b s \tan c e d e v e l o p s w e a k d i p o l e i n t h e r e v e r s e d i r e c t i o n o f t h e m a g n e t i c f i e l d o f t h e m a g n e t .$

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