A) \[\frac{q+p}{q}\]
B) \[1-\frac{p}{q}\]
C) \[\frac{1-p}{q}\]
D) \[\frac{p}{q}\]
Correct Answer: B
Solution :
Weight of the body \[=\] upthrust \[{{\rho }_{b}}=\left( 1-\frac{p}{q} \right){{\rho }_{w}}\], \[\therefore \frac{{{\rho }_{b}}}{{{\rho }_{w}}}=1-\frac{p}{q}\] \[i.e.,\,\,R.D.\]of body\[=\left( 1-\frac{p}{q} \right)\]or\[\left( \frac{q-p}{p} \right)\]
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