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Blazing goIITian

Joined:	28 Mar 2009
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20 Apr 2009 11:40:20 IST

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The volume of an air bubble is doubled as it rises from the bottom of lake to its surface. The atmos

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The volume of an air bubble is doubled as it rises from the bottom of lake to its surface. The atmospheric pressure is 75cm of mercury.The ratio of density of mercury to that of lake water is 40The volume of an air bubble is doubled as it rises from the bottom of lake to its surface. The atmospheric pressure is 75cm of mercury. The ratio of density of mercury to that of lake water is 40/3. The depth of the lake in metre isa-10b-15c-20d-25;

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pushkar limaye

Cool goIITian

Joined: 4 Jun 2007

Posts: 44

20 Apr 2009 11:51:40 IST

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10 meters.as volume is doubled,pressure at surface is half that at bottom of lake (assuming it cant xchange heat).also pressure at depth H is given by p(atm)+H*DENSITY OF WATER*g

(( jannat ))

Blazing goIITian

Joined: 28 Mar 2009

Posts: 464

20 Apr 2009 12:06:00 IST

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plz explain agn

VARUN RAJ

Blazing goIITian

Joined: 16 Mar 2008

Posts: 1825

20 Apr 2009 12:11:07 IST

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nice sum dude

the concept leis here

here p is the density of lake

solve and get the answer

pls rate me if u find me useful

!!!!!!cheers!!!!!!

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