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the ratio of thermal conductivity of two rods of different material is 5:4.the two rods of same area and same thermal resistance have length in ratio of?a-5:4,b-1:9,c-9:1,c-4:5

Asked by Priyanka 14th November 2017, 6:49 PM
Answered by Expert
Answer:
begin mathsize 16px style R subscript 1 equals fraction numerator calligraphic l subscript 1 over denominator K subscript 1 x A subscript 1 end fraction space semicolon space R subscript 2 equals fraction numerator calligraphic l subscript 2 over denominator K subscript 2 x A subscript 2 end fraction

A c c o r d i n g space t o space q u e s t i o n
R subscript 1 equals R subscript 2
calligraphic l subscript 1 over K subscript 1 equals calligraphic l subscript 2 over K subscript 2
calligraphic l subscript 1 over calligraphic l subscript 2 equals K subscript 1 over K subscript 2 equals 5 over 4 end style
Answered by Expert 7th December 2017, 2:17 PM
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