A magnetic needle is placed on a cork floating in a still lake in the northern hemisphere. Does the needle together with the cork move towards the north of the lake
Yes
No
May be or may not be move
Nothing can be said
Dip angle in vertical plane at an angle ${\cos ^{ - 1}}\,\left( {\frac{1}{{\sqrt 2 }}} \right)$ from magnetic meridian is $60^o$, then actual dip at that place
The angle of dip at a certain place is $30^o$. If the horizontal component of the earth’s magnetic field is $H, $ the intensity of the total magnetic field is
The true value of angle of dip at a place is $60^o$, the apparent dip in a plane inclined at an angle of $30^o$ with magnetic meridian is
Tell the proper reason for the earth’s magnetic field to occur.
If declination at a place is known to be $15^{\circ} \,E$. And a compass needle points as shown, then geographic north is represented by the direction numbered.