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Mechanical Properties of Fluids
Question
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Explain the phenomenon of thermal expansion on the basis of atomic theory.

Answer

According to the Atomic theory, when the substance is heated, it requires more space for their motion and hence it expands. Intermolecular force of attraction between the molecules decreases when a substance is heated. 

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Some More Questions From Mechanical Properties of Fluids Chapter

Which of the two waves - elastic waves or electromagnetic waves does need any material media for its propagation?

What is sound?

How sound is produced?

Can sound travel in vacuum?

Can two persons hear each other on the moon? Explain.

Can electromagnetic wave propagate in vacuum?

Can we listen in vacuum?

Which of the two moves forward during wave motion - particle or disturbance?

What type of wave is sound wave when it travels in air?

What type of wave is sound wave when it travels in solids?