The mass of a stone is 15.0g when completely immersed in water and 10.0g when completely immersed in a liquid of relative density 2.0. The mass of the stone in air is
-
A.
5.0g -
B.
12.0g -
C.
20.0g -
D.
25.0g
Correct Answer: Option C
Explanation
R.D = (frac{text{ mass of liquid displaced}}{text {mass of water displaced}})
2 = (frac{m – 10}{m – 15})
m = 20g