If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance

If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance for 50 km length will be
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Answer :

If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance for 50 km length will be 0.2 mega ohm

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