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At what depth from surface of water, the pressure will be equal to three times the atmosphere pressure? Given atmospheric pressure = 10 N/cm2 and g = 9.8 m/s2.
- a)20.4 m
- b)5.6 m
- c)2.8 m
- d)10.2 m
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
At what depth from surface of water, the pressure will be equal to thr...
Concept:
- Gauge pressure inside the water at the depth of ℎ m will be:
Pgauge = ρgh N/m2
- Derived using Bernoulli's equation
Calculation:
Given: Patm = 10 N/cm2 = 10× 104 N/ m2 , ρ = 1000 kg/m3, g = 9.8m/s2
Patm= 105Pa
- Now Pgauge should be equal to three times Patm
Pabs = Patm + Pgauge
⇒ 3 × Patm = Patm + ρgh
⇒ ρgh = 2× Patm
⇒ 1000 × 9.8 × h = 2 × 105
⇒ h = 20.4m
- Hence at the depth of 20.4m the pressure inside the water will be three times the atmospheric pressure.
Additional Information
- Gauge pressure or relative pressure (Pg) is the difference between the measured pressure and the local atmospheric pressure.
- Absolute pressure is the actual pressure at a point measured with respect to vacuum pressure i.e. zero pressure.
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At what depth from surface of water, the pressure will be equal to three times the atmosphere pressure? Given atmospheric pressure = 10 N/cm2and g = 9.8 m/s2.a)20.4 mb)5.6 mc)2.8 md)10.2 mCorrect answer is option 'A'. Can you explain this answer?
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At what depth from surface of water, the pressure will be equal to three times the atmosphere pressure? Given atmospheric pressure = 10 N/cm2and g = 9.8 m/s2.a)20.4 mb)5.6 mc)2.8 md)10.2 mCorrect answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about At what depth from surface of water, the pressure will be equal to three times the atmosphere pressure? Given atmospheric pressure = 10 N/cm2and g = 9.8 m/s2.a)20.4 mb)5.6 mc)2.8 md)10.2 mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At what depth from surface of water, the pressure will be equal to three times the atmosphere pressure? Given atmospheric pressure = 10 N/cm2and g = 9.8 m/s2.a)20.4 mb)5.6 mc)2.8 md)10.2 mCorrect answer is option 'A'. Can you explain this answer?.
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