When a body is moving vertically up with constant velocity (i) work...

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When a body is moving vertically up with constant velocity
(i) work done by lifting force is positive
(ii) work done by lifting force is negative
(iii) work done by force of gravity is positive
(iv) work done by force of gravity is negative
a) (ii, iii)
b) (ii, iv)
c) (i,iv)
d) (i, ii, iii)
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