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खाद्य पदार्थ को एक रेफ्रिजरेटर के भीतर रखने पर वह उसका ताप `9^(@)C` पर बनाये रखता है। यदि कमरे, का ताप `36^(@)C` हो, तो रेफ्रिजरेटर के कार्य-गुणांक की गणना कीजिए।

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रेफ्रिजरेटर का कार्य - गुणाक
`K = (T_(2))/(T_(1) T_(2))`
यहाँ `T_(1) = 36^(@) C = 36 + 273 = 309 K, T_(2) = 9^(@) C = ( + 273 = 283 K` .
`therefore K = (282)/(309-282) = (283)/(27) = 10.4`

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