Which of the following pairs are correctly matched? 1. Nordheim

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Which of the following pairs are correctly matched?
1. Nordheim equation: Effect of alloying on resistivity
2. Lorentz number: µ_h ∝ T^2·4
3. Wiedemana-Franz law: n_e >> n_h
4. Matthilssen rule: Total resistivity in the sum of different effects

Select the correct answer using the codes given below:

1. 2 and 3
2. 1 and 4
3. 1 and 2
4. 1, 2 and 4

Correct Option: B

NA