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24 June, 01:45

9. Which of the following can demagnetize a magnet?

(A). Hanging it North-South direction (D). Heating and hammering it

(B). Using it in dynamo

(E). Using it in radio speaker

(C). Putting it in water

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Answers (1)
  1. 24 June, 02:10
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    option D is correct ...
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