To find index error (e) distance between object needle and pole. of the concave mirror is $$20$$ cm. The separation between the indices of object needle and mirror was observed to be $$20.2$$ cm. In some observation, the observed image distance is $$20.2$$ cm and the object distance is $$30.2$$ cm. Find the index error e.

Question

Infinity Learn · Accepted Answer

Index error $$e=$$ observed distance $$-$$ actual $$distance=$$ separation between indices $$-$$ distance between object needle and pole of the $$mirror=20.2-20.0=0.2$$ cm

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