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Consider the following statements : 

1. Superconductors exhibit normal conductivity behaviour above a transition temperature Tc. 

2. Superconductors lose their superconducting nature in an external magnetic field, provided the external magnetic field is above a critical value. 

3. High Tc superconductors have Tc values in the range 1 to 10 K. 

Which of the above statements are correct ? (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

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Consider the following statements : 

1. Superconductors exhibit normal conductivity behaviour above a transition temperature Tc. 

2. Superconductors lose their superconducting nature in an external magnetic field, provided the external magnetic field is above a critical value. 

3. High Tc superconductors have Tc values in the range 1 to 10 K. 

Which of the above statements are correct ? (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

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