A) zero
B) \[{{45}^{o}}\]
C) \[90{}^\circ \]
D) \[{{180}^{o}}\]
Correct Answer: A
Solution :
Work done = Force \[\times \]Displacement It is equal to scalar product of Force and displacement \[=F.\,\cos \theta \] \[\cos \theta =1=\]Maximum when \[\theta =0\] Maximum work is done when \[\theta =\] zero
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