A) \[\left( 4/3 \right)sini\]
B) \[1/sini\]
C) 4/3
D) \[1\]
Correct Answer: B
Solution :
[b] \[\mu g\sin i={{\mu }_{air}}\sin 90{}^\circ {{\mu }_{g}}=\frac{1}{\sin i}\]
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