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The electrical resistance in ohms of any...

The electrical resistance in ohms of any specimen of material varies with temperature according to the approximate law.
`R - R_0 [1 + 5 xx 10^-3 (T - T_0)]` The resistance is `101.6 Omega` at triple point of water and 165.5 at normal meting point of head (600.5K). What is the temperature when the resistance is `123.4 Omega`?

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