Consider the following statements:
1. Type-I superconductors undergo an abrupt transition to the normal state above a critical magnetic field.
2. Type-II superconductors are highly technologically useful superconductors because the incidence of a second critical field in them is useful in the preparation of high field electromagnets.
Which of the above statements is/are correct?1
1 only
2
2 only
3
Both 1 and 2
4
Neither 1 nor 2