MCQ
The coefficient of superficial expansion of a solid is $2 \times 10^{-5} {°C^{-1}}$. It's coefficient of linear expansion is
- A$4 \times 10^{-5} {°C^{-1}}$
- B$3 \times 10^{-5} {°C^{-1}}$
- C$2 \times 10^{-5} {°C^{-1}}$
- ✓$1 \times 10^{-5} {°C^{-1}}$



