What is meant by ‘linear expansion coefficient of copper’ is 17 × 10 - 6 / ° C ? Why does the value remain the same even in kelvin scale?

When a body is heated or cooled, the length of the body changes due to a change in its temperature. This change or expansion is said to be linear expansion. The ratio of increase in length of the body per degree rise in temperature to its unit length is called the coefficient of linear expansion. The linear expansion coefficient of copper is 17 × 10 - 6 / ° C . It means that when a long piece of copper wire, say 'x' length, is heated by a certain temperature, it will expand by 0 . 00017 x for every Celsius (or Kelvin) increase in temperature. The value of the linear expansion coefficient of copper remains the same even in the Kelvin scale. This is because an increase of 1 ° C is the same as an increase of 1 K , the difference between the scales is, basically, just the start point.

What is meant by ‘linear expansion coefficient of copper’ is 17 × 10 - 6 / ° C ? Why does the value remain the same even in kelvin scale?

When a body is heated or cooled, the length of the body changes due to a change in its temperature. This change or expansion is said to be linear expansion. The ratio of increase in length of the body per degree rise in temperature to its unit length is called the coefficient of linear expansion. The linear expansion coefficient of copper is 17 × 10 - 6 / ° C . It means that when a long piece of copper wire, say 'x' length, is heated by a certain temperature, it will expand by 0 . 00017 x for every Celsius (or Kelvin) increase in temperature. The value of the linear expansion coefficient of copper remains the same even in the Kelvin scale. This is because an increase of 1 ° C is the same as an increase of 1 K , the difference between the scales is, basically, just the start point.

What is meant by "linear expansion coefficient of copper" is 17 × 10 ° C - 1 ? Why does the value remain the same even in Kelvin scale?

The rate of change of unit length per unit degree change in temperature is known as the Coefficient of Linear Expansion. The term "expansion" refers to a change or increase in length. Linear expansion is defined as a change in length along one dimension (length) over a volume. As a result, it is assumed that a change in temperature will result in a change in the rate of expansion. If the linear expansion coefficient of copper is said to be 17 × 10 ° C - 1 , that much change in temperature happens for a change of unit length. It does not change even in Kelvin scale as it is a ratio.

What is meant by "linear expansion coefficient of copper" is 17 × 10 ° C - 1 ? Why does the value remain the same even in Kelvin scale?

The rate of change of unit length per unit degree change in temperature is known as the Coefficient of Linear Expansion. The term "expansion" refers to a change or increase in length. Linear expansion is defined as a change in length along one dimension (length) over a volume. As a result, it is assumed that a change in temperature will result in a change in the rate of expansion. If the linear expansion coefficient of copper is said to be 17 × 10 ° C - 1 , that much change in temperature happens for a change of unit length. It does not change even in Kelvin scale as it is a ratio.

Among iron, invar and copper, which one has the least coefficient of linear expansion?

Invar has the least coefficient of linear expansion, among the given materials. Invar is a Fe - Ni alloy. It has a very small coefficient of thermal expansion at room temperature. The approximate values for coefficient of linear expansion for copper, iron and invar are α = 17 × 10 - 6 K - 1 , α = 11 . 8 × 10 - 6 K - 1 , α = 1 . 5 × 10 - 6 K - 1 respectively.

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 4 - Thermal Phenomena>West Bengal Board-2019>Q 8

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What is meant by ‘linear expansion coefficient of copper’ is $17 \times 10^{- 6} / ° C$ ? Why does the value remain the same even in kelvin scale?

Important Questions on Thermal Phenomena

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 4 - Thermal Phenomena>West Bengal Board-2018>Q 2

The real expansion of any liquid depends on the expansion of the vessel in which it is kept.

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 4 - Thermal Phenomena>West Bengal Board-2019>Q 6

State whether the following statement is true or false:
“The constituent particles of a material change position during conduction of heat through it.”

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 4 - Thermal Phenomena>West Bengal Board-2020>Q 9

Which quantities remain fixed in the definition of volume expansion co-efficient of a gas? Name a non-metal which is good conductor of heat.

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 4 - Thermal Phenomena>West Bengal Board-2020>Q 10

What is meant by "linear expansion coefficient of copper" is