A metal rod 800mm long is heated from 10oC to 95oC. If it expands by 1.36mm, the linear expansivity of the metal is
- 2.0 x 102K-1
- 2.0 x 102K-1
- 5.0 x 10-3K-1
-
2.0 x 10-5K-1
The correct answer is: D
Explanation
a = \(\frac{1.36}{800 \times (95 - 10)}\)= 2.0 x 10-5K-1