MCQOPTIONS
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| 1. |
The resultant of vectors \[\overrightarrow{\text{P}}\text{ }\]and \[\overrightarrow{\text{Q}}\] is \[\overrightarrow{\text{R}}\]. On reversing the direction of \[\overrightarrow{\text{Q}}\], the resultant vector becomes \[\overrightarrow{S}\]. Then, correct relation is |
| A. | \[~{{R}^{2}}+{{S}^{2}}=({{P}^{2}}+{{Q}^{2}})\] |
| B. | \[{{R}^{2}}+{{S}^{2}}={{P}^{2}}+{{Q}^{2}}\,\] |
| C. | \[{{R}^{2}}+{{P}^{2}}={{S}^{2}}+{{Q}^{2}}\] |
| D. | \[{{P}^{2}}+{{S}^{2}}=2\,({{Q}^{2}}+{{R}^{2}})\] |
| Answer» B. \[{{R}^{2}}+{{S}^{2}}={{P}^{2}}+{{Q}^{2}}\,\] | |