the ratio of the magnetic fields at distances 30 cm and 60 cm respectively from the centre of a bar magnet os 25:2. determine the length of the magnet.
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(30 cm)
30 cm + 60 cm = 90 cm / 25 :2 = 30 cm
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Answer: 30 cm
Explanation:
60 + 30 =90 now 90/25:2 =30
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