Question

1 pascal (Pa) is equal to

• A. $1\times {10}^5$ bar
• B. $1\times {10}^3$ bar
• C. $1\times {10}^{-3}$ bar
• D. $1\times {10}^{-5}$ bar

Answer 1

The correct option is D $1\times {10}^{-5}$ bar

We have,

$1atm=1\times {10}^{5}Pa$ ,

and $1atm=1bar$ ,

hence, $1bar=1\times {10}^{5}Pa$

or $1Pa=1\times {10}^{-5}bar$