The amount of heat needed to raise the temperature of 4   moles of a rigid diatomic gas from 0  …

The amount of heat needed to raise the temperature of 4 moles of a rigid diatomic gas from 0 °C to 50 °C when no work is done is (R is the universal gas constant)
  1. 250R
  2. 750R
  3. 175R
  4. 500R

Solution

ΔQ=ΔU+ΔW
Here ΔW=0
ΔQ=ΔU=nCVΔT
ΔQ=4×5R2(50)=500R
Hence option (4).

Asked in: JEE Main 2021 (20 Jul Shift 1)

Practice more Thermodynamics questions on Aicharya