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0. Two lamps 'A' rated 100 watt 220 V and 'B' rated 60 watt 220 V are connected in series to electric main supply of 220 V. The ratio of heat produced in lamp 'A' to the lamp 'B' would be (NTSE Delhi, Stage-I, 2015-16)
3 : 5
5 : 3
4 : 5
5 : 4
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