engineering recuitment BEL Probationary Engineers Mock Test 2025 Engineering Materials Science Structure and Properties of Engineering Materials Properties of Materials
Which of the following statements is/are incorrect regarding superconductors?
(a) A superconductor with little or no magnetic field within it is said to be in the Meissner state.
(b) A superconductor shows perfect conductivity above the critical temperature.
(c) A superconducting material ceases to superconduct when the applied external magnetic field is less than the critical magnetic field.
1
(a) and (c)
2
(b) and (c)
3
(a) and (b)
4
(a), (b) and (c)