A metal rod having linear expansion coefficient 2 x 10 -5 °C -1 has a length of 1 m at 20 °C. The temperature at which it is shortened by 1 mm is
Text Solution
Verified by ExpertsThe correct answer is:
C
-30°C
From, 1 2 = l 1 [1 + 
(t 2 – t 1 )]
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