Question
Physical Sciences Question on More Equations
A train track is laid with 100 m pieces of steel rails. If coefficient of linear expansion of steel is 11 x 10-6, what must be the minimum gap between two pieces of rails so that the train can run safely between 0°C and 50°C ?
A
5.5mm
B
5.5 cm
C
2.75 cm
D
11 cm
Answer
5.5 cm
Explanation
Solution
The correct option is (B): 5.5 cm