Physics · Gas Laws and Properties of Matter
A thin tube of length 1080 mm and uniform cross-section is sealed at both ends and placed horizontally on a table. At the exact center of the tube is a mercury (Hg) pellet of length 180 mm. The pressure of the air on both sides of the mercury pellet is P0. When the tube is tilted to an angle of 60° with the vertical, the lengths of the air columns above and below the Hg pellet become 480 mm and 420 mm, respectively. Assuming the temperature of the system is constant, calculate the pressure P0 in mm of Hg.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1525 mm of Hg
- 2420 mm of Hg
- 3315 mm of Hg✓
- 4210 mm of Hg
Correct answer
315 mm of Hg
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