1.

A false balance has equal arms. An object weigh X when placed in one pan and Y when placed in other pan, then the weight W of the object is equal to               [AFMC 1994]

A.             \[\sqrt{XY}\]             
B.             \[\frac{X+Y}{2}\]          
C.             \[\frac{{{X}^{2}}+{{Y}^{2}}}{2}\]            
D.             \[\frac{2}{\sqrt{{{X}^{2}}+{{Y}^{2}}}}\]
Answer» C.             \[\frac{{{X}^{2}}+{{Y}^{2}}}{2}\]            


Discussion

No Comment Found

Related MCQs