science
Grade6
Easy
Question
The length of rod is 4 m. When subjected to heat, it expands to 10 m with a change in temperature of 6°C. Find the coefficient of expansions.
- 0.5
- 0.25
- 0.78
- 0.36
The correct answer is: 0.25
The formula for coefficient of expansion is ∆L/L° = α [∆ T] .
∆L is change in length
L° is initial length
α is coefficient of expansion
∆T is change in temperature
Here, by putting the given data in formula we will get the coefficient of expansion as 0.25 .
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