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`        the volume of an air bubble is doubled as it rises from the bottom of the lake to its surface .The atmospheric pressure is 75cm of mercury.Ratio of density of mercuryto lake water is40/3.find depth of lake in metre.`
one year ago

Arun
20410 Points
```							Dear student

The pressure at the bottom of the lake is = The pressure due to hte air + The pressure due to the water column=P1
The pressure at the top is only the atmosphereic pressure=P2 Initial Vol=V1 and final Vol is =V2
NOW YOU HAVEN'T MENTIONED ABOUT THE TEMP SO I AM CONSIDERING IT TO BE CONSTANT
So from gas eq we get P1V1=P2V2V2=2V1
Putting the values in the eq 1 we get,
H=10 meter
Regards

```
one year ago
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Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions