New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A rod of length 2 m expands by 2 mm when heated. If

    coefficient of linear expansion is 1 x 10-5 / 0C, find temperature change.
    A 50º C Correct Answer Incorrect Answer
    B 75º C Correct Answer Incorrect Answer
    C 100º C Correct Answer Incorrect Answer
    D 200º C Correct Answer Incorrect Answer

    Solution

    ΔL = LαΔT ⇒ 0.002 = 2 x 10-5 x ΔT ⇒ ΔT = 100o C

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