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A solid weighs 30gf in air and 25gf when completely immersed in water. Its density is

Answer»

weight of solid in air = 30 gf and weight of solid in liquid = 26 gfRD of liquid = 0.8Therefore, DENSITY of liquid = 0.8 G cm‐³(i) Let V be the volume of the solid.Weight of liquid displaced Volume of liquiddisplaced xdensity of liquid x g = V x0.8xg DYNE = V x0.8 gfLoss in the weight of the solid when immersed in THELIQUID = 30 - 26 = 4gfBut the weight of liquid displaced is EQUAL to the loss in weight of the solid when immersed in liquid.Therefore, Vx0.8 = 4 or V = (ii) Given, weight of solid = 30gf Therefore, Mass of solid = 30 gDensity of solid=Hence relative density of solid = 6



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