Which of the following is used to make the needle of a mariner’s compass?
A
Plastic
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B
Wood
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C
Magnet
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D
Glass
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Solution
The correct option is C Magnet The purpose of mariner’s compass is to help in navigation. A mariner’s compass has a magnet fitted in it. Magnets align themselves in north and south direction when suspended freely. Thus they help in navigation by indicating the direction to the mariner.