Question

A body weighs $W$ $gf$ in air and $W_1$ $gf$ when it is completely immersed in water. Find the relative density of material of the body.

• A. $\frac{W}{W-W_1}$
• B. $\frac{W-W_1}{W}$
• C. $\frac{W}{W+W_1}$
• D. $\frac{W+W_1}{W}$

Answer 1

The correct option is A $\frac{W}{W-W_1}$

Relative density is the ratio of the weight of body in air to the upthrust.
So, $RD=\frac{W}{W-W_1}$