The magnetic compass is the most familiar compass type However recently Gyrocompass is also being us...........

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The magnetic compass is the most familiar compass type. However, recently Gyrocompass is also being used as a modern compass. What is/are its advantages over a magnetic compass?

1.They are able to find the true north, as opposed to magnetic north.

2.They are not affected by ferromagnetic metal as they do not require electricity to operate.

Which of the above is/are correct?

1 only

2 only

Both 1 and 2

None

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Explanation:

A gyrocompass is similar to a gyroscope. It is a non-magnetic compass that finds true north by using an (electrically powered) fast-spinning wheel and friction forces in order to exploit the rotation of the Earth. Gyrocompasses are widely used on ships. They have two main advantages over magnetic compasses:

Justification: Statement 1: They find the true north, i.e., the direction of Earth's rotational axis, as opposed to magnetic north. So, large ships typically rely on a gyrocompass, using the magnetic compass only as a backup.

Statement 2: No compass is affected by nonferromagnetic metal, although a magnetic compass will be affected by any kind of wires with electric current passing through them. Gyrocompass is not affected by ferromagnetic metal (including iron, steel, cobalt, nickel, and various alloys) in a ship's hull.

However, they are electrically operated. So, 2 is wrong.