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RETENTIVITY AND COERCIVITY...

RETENTIVITY AND COERCIVITY

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Define Retentivity

Match the following {:(" List - I"," List-II"),("(a) High retentivity","(i) Telephone diaphram"),("(b) High resistivity","(ii) Diamagnet"),("(c) Low coercivity","(iii) To decrease eddy current losses"),("(d) Negative susceptibility","(iv) Permanent magnet"):}

Racemic mixture |Retention|Walden Inversion|Racemisation|Solvent

Assertion (A): Electromanetism is relativistic Reason (R ): Coercivity of soft iron is small.

Assertion: Electromagnets are made of soft iron. Reason: Coercivity of soft iron is small.

Assertion: Electromagnets are made of soft iron. Reason: Coercivity of soft iron is small.