Question

When a rod is heated from 25 degree Celsius to 75 degrees celsius expands by 1mm when a rod of same material but with four times the length is heated from 25degree Celsius to 50 degree celsius , the increase in length is
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Answer 1

Answer:

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When a rod is heated from

to

, it expands by

. When a rod of same materlal but with

times the length is heated from

to

. The increase in length is