Question

A pressure of 104 dyne cm-2 is equivalent to ______ a. 105 Nm-2 b. 106 Nm-2 c. 104 Nm-2 d. 107 Nm-2

Answer 1

Given:

Pressure = 104 dyne cm-2

To Find:

Pressure in Nm-2 =?

Solution:

We know that

1N = $10^{5}$ dyne and 1m = 100cm

using this we can convert 104 dyne cm-2 into Nm-2

1dyne = $10^{-5}$N and 1cm-2 = $(10^{-2})^{2}$m-2

$= \dfrac{104 \times 10^{-5} }{ 10^{-4}}$

= 10.4 Nm-2

Thus, the given options are incorrect and must have the above answer in options.