Question

2. Short Answer Type:
1. Define coefficient of linear expansion.
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Answer 1

Answer:

The Coefficient of Linear Expansion can be defined as:

“The rate of change of unit length per unit degree change in temperature” Assuming the effect of pressure is negligible

hope this will help u

Answer 2

What is the Coefficient of Linear Expansion?

Expansion means, change or increase in length. If the change in length is along one dimension (length) over the volume, then it is called linear expansion. Here the reason behind the expansion is the change in temperature Thus, it is implied that the change in temperature will reflect in the rate of expansion. How much material can withstand its original shape and size when it is illuminated by the heat radiation is well explained using this concept.

The Coefficient of Linear Expansion can be defined as:

“The rate of change of unit length per unit degree change in temperature”

Assuming the effect of pressure is negligible.

Coefficient of Linear Expansion Formula

The coefficient of linear expansion can be mathematically written as:

αL=dLdT

Where,

αL is the coefficient of linear expansion.

dL is the unit change in length

dT is the unit change in temperature.

S.I. Unit

The S.I unit is: ∘C−1orK−1