Discussion
Pa is the atmospheric pressure and P is the absolute pressure at a depth \(h\) in an ocean. The gauge pressure at the depth \(h\) is
Answer: E
The gauge pressure is \(P - P_{a}\).
Absolute pressure at depth h is \(P = P_{a} + \rho gh\). Gauge pressure is the excess over atmospheric pressure, the part a pressure gauge open to the air reads.
\[ P_{gauge} = P - P_{a} = \rho gh \]
\(P + P_{a}\) double-counts the atmosphere, and the halved or doubled forms have no physical meaning here.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development