Question

A water column of 10 m in height represents the atmospheric pressure of:
(A). 100 kPa
(B). 100 dyne/cm$^2$
(C). 1 bar
(D). 0.9 atm
Choose the correct answer from the options given below:

• A. (A), (B) and (C) only.
• B. (B), (C) and (D) only.
• C. (A), (C) and (D) only.
• D. (A), (B) and (D) only.

Hint:

To easily solve hydrostatic unit questions, remember that \( 1 \, \text{atm} \) supports a water column of \( 10.3 \, \text{m} \).
Thus, a \( 10 \, \text{m} \) water column is very close to \( 1 \, \text{bar} \), \( 100 \, \text{kPa} \), and \( 1 \, \text{atm} \) (or \( 0.97 \, \text{atm} \)).
Exclude the very small value of dyne/cm\(^2\) (B) to find the correct answer.

Answer 1

The Correct Option is C