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Physics

An efficient use of energy results in :

  1. increase in the emission of greenhouse gases
  2. a reduction in the cost of energy
  3. a reduction in the emission of green house gases
  4. both (b) and (c)

Current Electricity

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Answer

both (b) and (c)

Reason — An efficient use of energy results in reduction of (i) the cost of energy and, (ii) the emission of greenhouse gases.

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