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Thermal Expansion

Kinetic energ...

Question

Kinetic energy of the molecules of a substance increases with increase in__________.

A

mass

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B

temperature

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C

area

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D

volume

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Solution

The correct option is B temperature
When the molecules move or vibrate more, they have higher kinetic energy. If the temperature is increased, the molecules vibrate more.
Thus, more will be the kinetic energy of the molecules when the temperature is increased.

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