Question

A pressure of 106 dyne/cm² is equivalent (a) 105 n/m2 (b) 104 n/m2 (c) 106 n/m2 (d) 107 n/m2​

Answer 1

Here the CGS unit of pressure is dyne/cm

2

and SI unit of it is Newton/m

2

.

Pressure = force/area

Now SI unit of force is N and CGS unit of it dyne.

1N=1kg×1m/s

2

(according to F=ma )

=1000gm×100cm/s

2

=10

5

dyne

Thus, 1N/m

2

=

(10

2

)

2

cm

2

10

5

dyne

=10dyne/cm

2

Therefore, 10

3

dyne/cm

2

=10

2

N/m

2

$Here the CGS unit of pressure is dyne/cm2 and SI unit of it is Newton/m2.</h3><h3></h3><h3>Pressure = force/area</h3><h3></h3><h3>Now SI unit of force is N and CGS unit of it dyne.</h3><h3></h3><h3>1N=1kg×1m/s2 (according to F=ma )</h3><h3></h3><h3>       =1000gm×100cm/s2=105dyne</h3><h3></h3><h3>Thus, 1N/m2=(102)2cm2105dyne=10dyne/cm2</h3><h3></h3><h3>Therefore, 103dyne/cm2=102N/m2</h3><h3></h3><h3>$

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