1.

A force \[\vec{F}=3\hat{i}+c\hat{j}+2\hat{k}\] acting on a particle causes a displacement \[\vec{S}=-4\hat{i}+2\hat{j}-3\hat{k}\] in its own direction. If the work done is 6J, then the value of c will be                 [DPMT 1997]

A.                 12          
B.                 6
C.                 1             
D.                 0
Answer» B.                 6


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