Question

a metallic piece of specific gravity 3.4 floats in mercury of rd 13.6 ,the fraction of its volume under Mercury is________.
A. 0.75
B. 0.5
C. 0.9
D. 0.25​

Answer 1

Answer:

A) 0.25

Explanation:

Volume below the surface = Mass of object/ Density of substance

Volume below the surface = Density of object x Volume/ Density of substance

Volume below the surface = 3.4 x 1000 kg/m^3 / 13.6 x 1000 kg/m^3 x Volume

Volume below the surface = 0.25 x Volume

SO 1/4TH OF THE VOLUME OF THE OBJECT WILL BE BELOW WATER.