a
અહી \({P_1} = \,1\,atm\,\, = \,1.01 \times {10^5}\,\,N/{m^2},\)

\({V_1}\, = \,1\,{m^3},\,\,{T_1}\, = \,300\,\,K,\,\,{P_2}\,\, = \,\,?,\)

\({V_2}\, = \,2{V_1}\, = \,2\,{m^3},\,{T_2}\, = \,2{T_1}\, = \,600\,K\)

\(\frac{{{P_2}{V_2}}}{{{T_2}}}\, = \,\frac{{{P_1}{V_1}}}{{{T_1}}}\,\,\)

\(\therefore \,{P_2}\, = \,\frac{{{P_1}{V_1}}}{{{T_1}}} \times \,\frac{{{T_2}}}{{{V_2}}}\,\,\)

\(= \,\frac{{1.01 \times {{10}^5} \times 1}}{{300}}\,\, \times \,\,\frac{{600}}{2} = \,\,1.010 \times {10^5}\,\,N/{m^2}\,\, \approx \,\,{10^5}\,N/{m^2}\)