A) 1092 \[kg/{{m}^{3}}\]
B) 961 \[kg/{{m}^{3}}\]
C) 915 \[kg/{{m}^{3}}\]
D) 843 \[kg/{{m}^{3}}\]
Correct Answer: C
Solution :
From given figure \[{{\rho }_{0}}+{{\rho }_{1}}g{{h}_{1}}={{\rho }_{0}}+{{\rho }_{w}}\,gh\omega \] \[\frac{{{\rho }_{1}}}{{{\rho }_{w}}}=\frac{{{h}_{w}}}{{{h}_{1}}}\] \[{{\rho }_{1}}=\frac{{{h}_{w}}}{{{h}_{1}}}\times {{\rho }_{w}}\] \[=\frac{135\times 100}{147.5}\] \[=915\,kg/{{m}^{3}}\]
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