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Question
Expansion in a substance is :
Expansion in a substance is :
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Solution
The correct option is A Directly proportional to rise in the temperature
When heat is applied to a body, the rate of vibration and the distances between the molecules composing it are increased and, hence, the space occupied by the body, i.e., its volume, increases.
So, expansion in a substance is directly proportional to rise in the temperature.
Hence, option A is correct.
When heat is applied to a body, the rate of vibration and the distances between the molecules composing it are increased and, hence, the space occupied by the body, i.e., its volume, increases.
So, expansion in a substance is directly proportional to rise in the temperature.
Hence, option A is correct.
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