The angle between the earth’s magnetic field and geographic axis is
Zero
17o
23o
None of these
At a place the horizontal component Bo and vertical component Vo of the earth’s magnetic field are equal in magnitude. The total intensity at a place is
Bo
Bo2
2Bo
√2 Bo
Choose the right one from the following. A deflection magnetometer can be used for measuring
Declination
Dip
Horizontal component
All the above
If a magnet is suspended at an angle of 30° to the magnetic meridian, the dip needle makes an angle of 45° with the horizontal. The real dip is:
tan-1 (√ 3 / 2)
tan-1 (√ 3 )
tan-1 ( 2/√3 )
tan-1 (2 )
The lines of force due to earth’s horizontal magnetic field are
parallel and straight
concentric circle
elliptical
curved lines
If a magnet is suspended at an angle 30° to the magnetic meridian, the dip needle makes an angle of 60° with the horizontal. What is the true value of dip?
tan-1 (2/3)
tan-1 (3/2)
tan-1 (3)
tan-1 (2)
The vertical component of the earth’s magnetic field is zero at a place where the angle of dip is
0o
45o
60o
90o
At a place the angle of dip is 30o. If the horizontal component of earth’s magnetic field is H, the total earth’s field will be
H/2
H + H / √3
H √2
H/√3
The angle of dip at a place gives,
the horizontal component of the earth’s magnetic field
the location of the geographic meridian
the vertical component the of the earth’s field
the direction of the earth’s magnetic field
At a certain place the horizontal component of earth’s magnetic field is a √3 time the vertical component, the angle of dip is
15o
30o
