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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Physics
Chapter: Mechanical Properties of Solids

NTA Abhyas 2020 · Physics · Mechanical Properties of Solids

32g of O _ 2 _ is contained in a cubical container of side 1m and...

32g

of

{O}_{2}_{}is contained in a cubical container of side 1m

and maintained at a temperature of

127 ° C

. The isothermal bulk modulus of elasticity of the gas is (universal gas constant=

R

)

Options

A $127R$
&
B $400R$
&
C $200R$
&
D $560R$
&

Correct answer

B. $400R$

&

Step-by-step solution

The bulk modulus of elasticity at a constant temperature

PV = nRT

\dfrac{dP}{P} = \dfrac{dV}{V}

B = - \dfrac{dP}{dV / V}

B = P

B = \dfrac{nRT}{V} = \dfrac{R\left(400\right)}{{1}^{3}} = 400R

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