Advertisements
Advertisements
प्रश्न
A solid weighs 1.5 kgf in air and 0.9 kgf in a liquid of density 1.2 × 103 kg m-3. Calculate R. D. of solid.
Advertisements
उत्तर
Weight of body in air , W1 = 1.5 kgf
Weight of body when completely immersed in liquid W2 = 0.9 kgf
Density of liquid = 1.2 × 103 kgm-3
R.D. of liquid = 1.2
R.D. of body = `"W"_1/("W"_1 - "W"_2) xx "R.D. of liquid"`
R.D. of body = `1.5/(1.5 - 0.9) xx 1.2`
R.D. of body = `1.5/0.6 xx 1.2`
R.D. of body = 3
APPEARS IN
संबंधित प्रश्न
How does the density of material of a body determine whether it will float or sink in water?
A metal cube of edge 5 cm and density 9 g cm-3 is suspended by a thread so as to be completely immersed in a liquid of density 1.2 g cm-3. Find the tension in thread. (Take g = 10 m s-2)
What is the unit of relative density?
A solid weighs 32 gf in air and 28.8 gf in water. Find: (i) The volume of solid, (ii) R.D. of solid and (iii) The weight of solid in a liquid of density 0.9 g cm-3.
A piece of stone of mass 113 g sinks to the bottom in water contained in a measuring cylinder and water level in cylinder rises from 30 ml to 40 ml. Calculate R.D. of stone.
A glass cylinder of length 12 x 10-2 m and area of crosssection 5 x 10-4 m2 has a density of 2500 kgm-3. It is immersed in a liquid of density 1500 kgm-3, such that 3/8. of its length is above the liquid. Find the apparent weight of glass cylinder in newtons.
An iceberg floats in sea water of density 1.17 g cm 3, such that 2/9 of its volume is above sea water. Find the density of iceberg.
A solid weighs 105 kgf in air. When completely immersed in water, it displaces 30,000 cm3 of water, calculate relative density of solid.
Calculate the mass of a body whose volume is 2m3 and relative density is 0.52.
A piece of metal weighs 44.5 gf in air, 39.5 gf in water. What is the R.D. of the metal?
