Magnetism Question 53

Question: At a certain place, the horizontal component of earth’s magnetic field is $ \sqrt{3} $ times the vertical component. The angle of dip at that place is

[MP PMT 1984, 85; AFMC 2000]

Options:

A) $ 60{}^\circ $

B) $ 45{}^\circ $

C) $ 90{}^\circ $

D) $ 30{}^\circ $

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Answer:

Correct Answer: D

Solution:

$ B _{H}=\sqrt{3}\ B _{V}, $ also $ \tan \theta =\frac{B _{V}}{B _{H}}=\frac{1}{\sqrt{3}}\Rightarrow \theta =30^{o} $