JAMB - Physics (1978 - No. 18)

A gas at pressure PNm\(^{-2}\) and temperature 27°C is heated to 77°C at constant volume. The new pressure is

0.85 PN-m^-2

0.86 PN-m^-2

1.16 PN-m^-2

1.18 PN-m^-2

2.85 PN-m^-2

At constant volume,

\(\frac{P_1}{T_1}\) = \(\frac{P_2}{T_2}\)

\(\frac{P}{27 +273}\) = \(\frac{P_2}{77 + 273}\)

\(300P_2 = 350P\)

P2 = 1.16 PNm\(^{-2}\)