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In English the phrase tip of the iceberg...

In English the phrase tip of the iceberg is used to mean a small visible fraction of something that is mostly hidden . For a real iceberg. What is this fraction. If the density of sea water is `1.03 kg//c c` and that of ice is `0.92 g//c c`?m

A

`0.106`

B

`10.6`

C

`0.901`

D

`0.801`

Text Solution

Verified by Experts

(a) For equilibrium
`:.` weight =force of buoyancy
or `mg=V_("in")sigmag`
`rhoV=V_("in")sigma :. V_("in") =(rhoV)/(sigma)`
`:. V_("out")=V-V_("in")=V(1-(rho)/(sigma))`
Fraction `V_("out)/(V)=1-(rho)/(sigma)=(1-(0.92)/(1.03))=0.106`
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