AIIMS 201925 May
- Exam
- AIIMS
- Year
- 2019
- Date
- 25 May
- Subject
- Physics
- Chapter
- Experimental Physics
AIIMS 2019 · 25 May · Physics · Experimental Physics
Two mole of oxygen is mixed with eight mole of helium. The...
Two mole of oxygen is mixed with eight mole of helium. The effective specific heat of the mixture at constant volume is
Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
For mixture of gases,
C_V=\frac{n_1\left(C_V\right)_1+n_2\left(C_V\right)_2}{n_1+n_2}\left(C_V\right)_1=\frac{5}{2} R,\left(C_V\right)_2=\frac{3}{2} R \therefore \quad C_V=\frac{2 \times \frac{5}{2} R+8 \times \frac{3}{2} R}{2+8}=\frac{17}{10} R=1.7 R