North pole of a magnet can be identified by
(a) Another magnet having its poles marked as North pole and South pole.
(b) Another magnet no matter whether the poles are marked or not.
(c) Using an iron bar.
(d) Using iron filings.
North pole of a magnet can be identified by nother magnet having its poles marked as the north pole and south pole.
Hence option (A) is correct.