Question

A mass m of an ideal gas initially has volume
V and temperature T. When it is kept at
constant volume V, heat Q is required to
increase its temperature to T. + dT. If the
volume is not kept constant, but the gas
expands from V to 3V. when the temperature
increases from T to (T + 2dT), then the heat
supplied must be
1) less than 2Q 2) equal to 2Q
3) more than 2Q 4) equal to 6Q
​

Answer 1

Answer:

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Answer 2

INITIALAnswer:

given = P₁V₁/T₁ = P₂V₂/T₁ , V₁ = V₀ V₂ = 3V₀

            T₁ = T₀ T₂ = T₀ +2ΔT

TO find = heat supplied

solution ;-

       V₁ / T₁   = V₂/T₂ = V₀/T₀

                    = 3V₀/T₀+2ΔT  = 3T₀

               T₀ =ΔT

then , heat supplied will be,

msΔT = ms(2T₀)

msT₀ = initial heat

heat supplied = 2Q

therefore option b is correct

it is equal to 2Q