At a certain place the angle of dip is `30^(@)` and the horizontal component of earth's magnetic field is `0.50` oersted. The earth's total magnetic field is

Options

A. `sqrt3`
B. 1
C. `(1)/(sqrt3)`
D. `(1)/(2)`

Answer

c

Explanation

(c) `B=(H)/(cos theta)=(0.50)/(cos 30^(@))=(0.50xx2)/(sqrt3)=1//sqrt3`