A) \[gh\rho a\]
B) \[\frac{2gh}{\rho a}\]
C) \[2\rho agh\]
D) \[\frac{\rho gh}{a}\]
Correct Answer: C
Solution :
[c] Force \[F=\rho Qv=\rho a{{v}^{2}}=\rho a\times 2gh\] \[={{F}_{2}}-{{F}_{1}}\] \[=\rho av_{2}^{2}-\rho av_{1}^{2}\] \[=\rho a(v_{2}^{2}-v_{1}^{2})\] \[=\rho a[2g(y+h)-2gy]\] \[=\rho a\times 2gh\]You need to login to perform this action.
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