If a plastic sphere floats in water (density = 1000kgm3) with 0.5 of its volume submerged, and floats in oil with 0.4 of its volume submerged the density of the oil is
-
A.
800kgm3 -
B.
1200kgm3 -
C.
1250kgm3 -
D.
2000kgm3
Correct Answer: Option A
Explanation
R.d = (frac{0.4}{0.5}) = 0.8
0.8 = (frac{text {Density of oil}}{text{Density of water}})
0.8 = (frac{text {Density of oil}}{1000})
Density of oil = 800kgm3