A rod is found to be 0.04 cm longer at 30°C than it is at 10°C. Calculate its length at 0°C if coefficient of linear expansion, a is 2 x 10$/ °C.
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![A rod is found to be 0.04 cm longer at 30°C than it is at 10°C. Calculate its length
at 0°C if coefficient of linear expansion, a is 2 x 105 / °C.
(b)
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