First slide

Magnetic elements of Earth

Question

At a place the values of $B_{H} and B_{V} are 0.4 \times 10^{- 4} T and 0.3 \times 10^{- 4} T$ respectively, then the angle of dip is

Moderate

A

$\tan^{- 1} (0.75)$
B

$\tan^{- 1} (0.5)$
C

$\tan^{- 1} (0.8)$
D

None of these

Solution

Formula:
$\tan δ = \frac{B_{V}}{B_{H}} = \frac{3 \times 10^{- 5}}{4 \times 10^{- 5}} = 0.75 \Rightarrow δ = \tan^{- 1} (0.75)$

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