alleryPressure at depth h in liquid column under atmospheric pressure P₀:
AP₀
BP₀ × ρ
CP₀ + ρ g h (absolute pressure)
Dρ g h
Answer & Solution
Correct answer: C. P₀ + ρ g h (absolute pressure)
Absolute pressure = P₀ + ρgh.
Gauge pressure = ρgh (excess over atmosphere).
**Diver at 30 m:** ≈ 4 atm absolute.
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