If agas absorbs 200 J of heat and expands by 500 cm 3 against a constant pressure of 2- 10 5 N m -2- then the change in internal energy is

A gas expands from 1.5 to 6.5 L against a constant pressure of 0.5 atm and during this process the gas also absorbs 100 J of heat. The change in the internal energy of the gas is:

An ideal gas expands against a constant external pressure of 2 atmosphere from 20L to 40L and absorbs 10kJ of heat from surrounding. What is the change in the internal energy of the system ?

Join BYJU'S Learning Program

If agas absorbs 200J of heat and expands by 500cm3 against a constant pressure of 2×105Nm−2, then the change in internal energy is

The correct option is C +100From first law of thermodynamics,Change in internal energy isΔU=q−w=q−PΔV =200−2×105×500×10−6 =100J

If agas absorbs $200 J$ of heat and expands by $500 c m^{3}$ against a constant pressure of $2 \times 10^{5} N m^{- 2}$ , then the change in internal energy is

The correct option is C $+ 100$
From first law of thermodynamics,
Change in internal energy is
$Δ U = q - w = q - P Δ V$
$= 200 - 2 \times 10^{5} \times 500 \times 10^{- 6}$
$= 100 J$