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A long horizontal glass capillary tube o...

A long horizontal glass capillary tube open at both ends contains a mercury thread 1m long at `0^0 C`. A scale is etched on the glass tube. This scale is correct at `0^0 C`. Find the length of mercury thread as shown by this scale at `100^0 C`. Also find original length of thread at `0^0 C`. (` gamma_mercury = 18.2 x 10^-5 K^-1, alpha_glass = 9 x 10^-6 K ^-1)

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