Question: ans Which of the following is/are true? I. The earth has a magnetic field. Il. The earth's magnetic field is similar to a bar magnet.

ans

Which of the following is/are true? I. The earth has a magnetic field. Il. The earth's magnetic field is similar to a bar magnet. Ill. The north magnetic pole and geographic north are located at exactly the same point. IV. The earth's magnetic field is constant and never changes. O I only O I and II only O Ill only O All of the above

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