question_answer

A compass needle whose magnetic moment is\[60\,A{{m}^{2}}\], is directed towards geographical north at any place experiencing moment of force of\[1.2\times {{10}^{-3}}Nm\]. At that place the horizontal component of earth field is 40 micro\[W/{{m}^{2}}\]. What is the value of dip angle at that place?

A) \[30{}^\circ \]

B) \[60{}^\circ \]  

C) \[45{}^\circ \]

D) \[15{}^\circ \]