1.

A force \[\overrightarrow{F}=(5\hat{i}+3\hat{j})\]Newton is applied over a particle which displaces it from its origin to the point \[\overrightarrow{r}=(2\hat{i}-1\hat{j})\] metres. The work done on the particle is                      [MP PMT 1995]

A.                 ? 7 J      
B.                 +13 J
C.                 +7 J       
D.                  +11 J
Answer» D.                  +11 J


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