Which one of the following statements is not correct ........

Geography and Environment Geography

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Which one of the following statements is not correct?

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CAPF 2016 Paper-1

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The Earth’s magnetic field is due to the motion of metals like iron and nickel in the core of the Ear

The magnetic field lines of force are widely separated near the poles of a magnet but these lines come closer to one another at other places

If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density decreases

The magnetic lines of force come closer to one another near the poles of a magnet but they are widely separated at other places.

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Explanation:

Earth’s magnetic field is defined by the North and South Poles that align generally with the axis of rotation (Figure 9.13). The lines of magnetic force flow into Earth in the northern hemisphere and out of Earth in the southern hemisphere. Because of the shape of the field lines, the magnetic force trends at different angles to the surface in different locations