Physics Numerical for class 9 motion & other chapters with answers & [PDF]
Last updated on December 12th, 2023 at 01:53 pm
Relative density Numerical (practice problems – set 1)
72) The relative density of silver is 10·5. What is the Density of silver in S.I. unit? What assumption do you make in your calculations?
73) A solid weighs 50 gf in air and 44 gf when completely immersed in water. Calculate The upthrust, The volume of the solid, and the relative density of the solid.
74) A solid weighs 30 gf in air and 26 gf when completely immersed in a liquid of relative density 0·8. Find: (i) the volume of solid, and (ii)the relative density of the solid.
75) A body of volume 100 cm^3 weighs 1 kgf in air. Find: (i) its weight in water and (ii) its relative density.
76) A body of mass 70 kg, when completely immersed in water, displaces 20,000 cc of water. Find:(i) the weight of the body in water and (ii) the relative density of the material of the body.
77) A solid weighs 120 gf in air and 105 gf when it is completely immersed in water. Calculate the relative density of the solid.