1.

The surface charge density of a thin chargeddisc of radius R is σ. The value of the electric32.field at the centre of the disc isIS E Withrespect to the field at the centre, the electricfield along the axis at a distance /3 R fromthe centre of the disc:(1) reduces by 70.7%(2) reduces by 29.3%(3) reduces by 86.6%(4) reduces by 13.4%

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