IGNITION TEMPRETURE

Assertion (A): chi-T graph for a diamagnetic material is a straight line parallel to T- axis Reason (R ): This is because susceptibility of a diamagnetic materical is not affected by tempreture

Assertion (A): The earth's magnetic field is due to iron present in its core. Reason (R ): At a high tempreture magnet losses its magnetic property or magnetism.