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NDA 2018 GAT · General Knowledge · Fluids and Pressure · medium

The gauge pressure at a depth of 10 m in water is (density of water = 1000 kg/m³, g = 10 m/s²)

Single correct option

The gauge pressure at a depth of 10 m in water is (density of water = 1000 kg/m³, g = 10 m/s²)
  1. A. 1 × 10^4 Pa
  2. B. 2 × 10^5 Pa
  3. C. 1 × 10^6 Pa
  4. D. 1 × 10^5 Pa
Show answer and solution

Answer: (D) 1 × 10^5 Pa

Gauge pressure at depth is h ρ g = 10 × 1000 × 10 = 10^5 Pa. The total pressure would be about 2 × 10^5 Pa because atmospheric pressure of roughly 10^5 Pa is added, which is the trap in the option 2 × 10^5 Pa. The question asks for the gauge pressure, so atmospheric pressure is excluded.
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Original question written in the NDA 2018 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake