The reading of brass scale at room temperature is L 1 . Above room temperature reading is L 2 and below room temperature reading is L 3 . Then, relation between the readings is

Question

The reading of brass scale at room temperature is L 1 . Above room temperature reading is L 2 and below room temperature reading is L 3 . Then, relation between the readings is, L 1 > L 2 > L 3, L 3 > L 1 > L 2, L 2 > L 3 > L 1, L 1 = L 2 = L 3

MARKS App · Accepted Answer

On increasing the temperature, scale expands. So it reads less and on cooling it contracts so it reads more. Therefore L 3 > L 1 > L 2

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