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1. |
A body is at rest under the action of three forces, two of which are \[{{\vec{F}}_{1}}=4\hat{i},\,{{\vec{F}}_{2}}=6\hat{j},\]the third force is [AMU 1996] |
A. | \[4\hat{i}+6\hat{j}\] |
B. | \[4\hat{i}-6\hat{j}\] |
C. | Sound travels in the form of waves |
D. | \[-4\hat{i}-6\hat{j}\] |
Answer» E. | |