A) \[30{}^\circ \]
B) \[45{}^\circ \]
C) \[60{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: A
Solution :
\[\tau =M\times B\] \[\left| \,\tau \, \right|\,\,=\,\,\left| M \right|\,\,\left| B \right| sin \theta \] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,0.016= 0.2\times 0.16 \times sin \theta \] \[\sin \,\theta \,\,=\,\,\frac{1}{2}\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\theta =30{}^\circ \]You need to login to perform this action.
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