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If the normal atmospheric pressure in a laboratory supports a column of mercury 0.76m high...

Physics
JAMB 1983
If the normal atmospheric pressure in a laboratory supports a column of mercury 0.76m high and the relative density of mercury is 13.8, then the height of water column which atmospheric pressure will support in the same laboratory at the same time is
  • A. 0m
  • B. 10m
  • C. 13m
  • D. 14m
  • E. 18m
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Correct Answer: Option B
Explanation
Density of H2O = 1gcm3

Density x pressure = constant

D1 x P1 = D2 x P2

13.6 x 0.76 = 1 x P2

P2 = 10m
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