Radius of an air bubble at the bottom of the lake is and it becomes when the air bubble rises to the top surface of the lake. If cm of water be the atmospheric pressure, then the depth of lake is |
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a) |
b) |
c) |
d) |

Radius of an air bubble at the bottom of the lake is and it becomes when the air bubble rises to the top surface of the lake. If cm of water be the atmospheric pressure, then the depth of lake is |
|||||||

a) |
b) |
c) |
d) |

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