In rising from the bottom of a lake, to the top, the temperature of an air...

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In rising from the bottom of a lake, to the top, the temperature of an air bubble remains unchanged, but its diameter gets doubled. If h is the barometric height (expressed in m of mercury of relative density p) at the surface of the lake, the depth of the lake is (a) 8 ph m (c) 9 ph m (b) 7ph m (d) 12 ph m In rising from the bottom of a lake, to the top, the temperature of an air bubble remains unchanged, but its diameter gets doubled. If h is the barometric height (expressed in m of mercury of relative density p) at the surface of the lake, the depth of the lake is (a) 8 ph m (c) 9 ph m (b) 7ph m (d) 12 ph m

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