Question
A submarine is designed to withstand an absolute pressure of 100 atm. How deep can it go below the water surface ? (Consider the density of water = 1000 kg m^ -3 , 1 atm = 1 10^ 5 Pa and gravitational acceleration g = 10 m/s^2)
NEET
Physics
Mechanical Properties of Fluids
2026
NEET 2026 (Cancelled)
NEET Physics Question (2026) — Solution
Options
- A. 990 m
- B. 9900 m
- C. 99 m
- D. 9000 m
Answer
A. 990 m
Step-by-step solution
The absolute pressure at a depth h below the water surface is given by P = P_0 + g h, where P_0 is the atmospheric pressure. Given: P = 100 atm = 100 10^5 Pa P_0 = 1 atm = 1 10^5 Pa = 1000 kg m^ -3 g = 10 m/s^2 Substituting the values into the equation: 100 10^5 = 1 10^5 + 1000 10 h 99 10^5 = 10^4 h h = 99 10^5 10^4 h = 990 m Answer: 990 m
Related: Physics — Mechanical Properties of Fluids · All PYQ Banks