Question

A solid weight 30 gf in air and 26 gf when completly immersed in a liquid of relative density 0.8 find volume of solid

Answer 1

APPLY THE FORMULA OF VOLUME OF GIVEN SOLID

Answer 2

Answer:

Volume = 5 cm^3

R.D = 6

Explanation:

Calculate Loss In Weight first to make calculation easy ,

Loss in weight = Weight in air - Weight in water

Loss in weight = 30 - 26

Loss in weight = 4 gf

We need to find density for the next step so ,

R.D = Density of substance / Density of liquid

0.8 = D.S / 1 g cm -3

Therefore ,

Density of Substance = 0.8 g cm -3

Volume = (Mass / Loss in weight) / Density

Volume = 4 / 0.8

Volume = 5 cm^3

Density = Mass / V

             = 30/5

             = 6 g cm -3

hence R.D = 6