Q 1342380233.     An air bubble is released from the bottom of a lake of depth 11m.The temperature at the bottom is `4^{circ}C` and that at the surface is `12^{circ}C`. What is the ratio of bubble's radius at the surface and its radius at bottom?Assume density of heater is `100Kg//m^3` .Atmospheric pressure `=75cm` of `Hg` & density of mercury `=13600Kg//m^3`

A

`1.2`

B

`1.3`

C

`1.4`

D

`1.5`

HINT

`frac{P_1V_1}{T_1} = frac{P_2V_2}{T_2}`

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