Question

Atmospheric pressure in SI units can be written as $1.01325\times {10}^{5}N/m^2$.Using the concept of dimensional analysis its value in CGS unit will be expressed as

• A. $1.01325\times {10}^{5}dyne/c{m}^2$
• B. $1.01325\times {10}^{6}dyne/c{m}^2$
• C. $1.01325\times {10}^{7}dyne/c{m}^2$
• D. $1.01325\times {10}^{8}dyne/c{m}^2$

Answer 1

Answer: (B)

$1.01325\times {10}^{6}dyne/c{m}^2$

$1N={10}^{5}dyne$

$1m=100cm$

$1.01325\times {10}^{5}N/m^2$

$=\frac{1.01325\times {10}^5\times {10}^5}{100\times 100}$

$=1.01325\times {10}^{6}dyne/c{m}^2$