A) \[\sqrt{\frac{wn-P}{2N}}\]
B) \[\sqrt{\frac{2(w-nP)}{N}}\]
C) \[\sqrt{\frac{nP-w}{2N}}\]
D) None of these
Correct Answer: B
Solution :
W = nP+\[\frac{1}{2}\]NX2 Or \[\frac{1}{2}N{{X}^{2}}=W-nP\,\,or\,\,{{X}^{2}}=\frac{2(W-nP)}{N}\] So, \[X=\sqrt{\frac{\mathbf{2}\left( \mathbf{W}\text{ }\text{ }\mathbf{nP} \right)}{\mathbf{N}}}\]
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