Ncert Exercises & Solutions

We would like to make a vessel whose volume does not change with temperature (take a hint from the problem above). We can use brass and iron $(β_{v b r a s s} = 6 \times 10^{- 5} / K a n d β_{v i r o n} = 3.55 \times 10^{- 5} / k)$ to create a volume of 100 cc. How do you think you can achieve this?