At a point A on the earth’s surface the angle of dip, δ = + 25°. At a point B on the earth's surface the angle of dip, δ = – 25°. We can interpret that: (a) A is located in the southern hemisphere and B is located in the northern hemisphere. (b) A is located in the northern hemisphere and B is located in the southern hemisphere. (c) A and B are both located in the southern hemisphere. (d) A and B are both located in the northern hemisphere.

Answer: (b). Positive dip: the north end of the needle dips below horizontal, which happens in the northern hemisphere. Negative dip: the north end points upward (south end dips), which happens in the southern hemisphere. So the answer is (b) A is in the northern and B in the southern hemisphere.

At a point A on the earth’s surface the angle of dip, δ = + 25°. At a… | NEET 2019

Q9NEET 2019Easy

Earth's Magnetism

At a point A on the earth’s surface the angle of dip, $\delta$ = + 25°. At a point B on the earth's surface the angle of dip, $\delta$ = – 25°. We can interpret that:

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Answer: (b)

Positive dip: the north end of the needle dips below horizontal, which happens in the northern hemisphere.
Negative dip: the north end points upward (south end dips), which happens in the southern hemisphere.
So the answer is (b) A is in the northern and B in the southern hemisphere.

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