Question:medium
A boy can reduce the pressure in his lungs to 750 mm of mercury. Using a straw he can drink water from a glass upto the maximum depth of (atmospheric pressure = 760 mm of mercury; density of mercury = \(13.6 \text{ gcm}^{-3}\))
A boy can reduce the pressure in his lungs to 750 mm of mercury. Using a straw he can drink water from a glass upto the maximum depth of (atmospheric pressure = 760 mm of mercury; density of mercury = \(13.6 \text{ gcm}^{-3}\))
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To find the height of a liquid column that exerts the same pressure as another, use the inverse ratio of densities: \(h_1 \rho_1 = h_2 \rho_2\). Water is 13.6 times less dense than mercury, so the column will be 13.6 times taller!
Updated On: May 6, 2026
- \(13.6 \text{ cm}\)
- \(9.8 \text{ cm}\)
- \(10 \text{ cm}\)
- \(76 \text{ cm}\)
- \(1.36 \text{ cm}\)
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The Correct Option is A
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