If a plastic sphere floats in water density 100... - JAMB Physics 1992 Question
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 option: a
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
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