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

Answer 1

Answer: (B)

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.