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The ratio of lengths of two rods is 1 : ...

The ratio of lengths of two rods is `1 : 2` and the ratio of coefficient of expansions is `2 : 3`. The first rod is heated through `60^(@)C`. Find the temperautre through `60^(@)C`. Find the temperature through `60^(@)C`. Find the temperature through which the second rod is to be heated so that its expansion is twice that of first is

A

`60^(@)C`

B

`40^(@)C`

C

`30^(@)C`

D

`10^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`Deltal = alphalDeltat rArr (Deltat_(1))/(Deltat_(2)) = (alpha_(2))/(alpha_(1)) xx (l_(2))/(l_(1))`
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