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The resistance of a wire is 5 ohm at `50^@C` and 6 ohm at `100^@C`. The resistance of the wire at `0^@C` will be

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The resistance of a wire is 5 ohm at `50^@C` and 6 ohm at `100^@C`. The resistance of the wire at `0^@C` will be
A. `3 Omega`
B. `2 Omega`
C. `1 Omega`
D. `4 Omega`
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Correct Answer - D
Let `R=R_(0)` at `0^(@)C`
`5=R_(0)(1+alphaxx50).....(i)`
`6=R_(0)(1+alphaxx100)....(ii)`
Solving `(i)` and `(ii) implies R_(0)=4 Omega`
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