Statement I: For making permanent magnets, steel is preferred over soft iron. Statement II: Retentivity of steel is smaller that soft iron.

Question

Statement I: For making permanent magnets, steel is preferred over soft iron. Statement II: Retentivity of steel is smaller that soft iron. (A) If both statements are true and statement II is the correct explanation of statement I (B) If both statements are true but statement II is not the correct explanation of statement I (C) If statement I is true but statement II is false (D) If both statements are false

Tardigrade Admin · Accepted Answer

Steel is preferred over soft iron for making permanent magnets, because coercivity of steel is larger than soft iron. Steel has lower retentivity than soft iron.

Q. Statement I: For making permanent magnets, steel is preferred over soft iron. Statement II: Retentivity of steel is smaller that soft iron.

If both statements are true and statement II is the correct explanation of statement I

If both statements are true but statement II is not the correct explanation of statement I

If statement I is true but statement II is false

If both statements are false

Steel is preferred over soft iron for making permanent magnets, because coercivity of steel is larger than soft iron. Steel has lower retentivity than soft iron.

Q. Statement I: For making permanent magnets, steel is preferred over soft iron.
Statement II: Retentivity of steel is smaller that soft iron.