A_rod_of_3_cm_diameter_and_20_cm_length_is_maintained_at_100_degree_Celsius_at_one_end_and_10_degree_Celsius_at_the_other_end._These_temperature_conditions_are_attained_when_there_is_heat_flow_rate_of_6_W._If_cylindrical_surface_of_the_rod_is_completely_insulated,_determine_the_thermal_conductivity_of_the_rod_material$

A_rod_of_3_cm_diameter_and_20_cm_length_is_maintained_at_100_degree_Ce

1.	A_rod_of_3_cm_diameter_and_20_cm_length_is_maintained_at_100_degree_Celsius_at_one_end_and_10_degree_Celsius_at_the_other_end._These_temperature_conditions_are_attained_when_there_is_heat_flow_rate_of_6_W._If_cylindrical_surface_of_the_rod_is_completely_insulated,_determine_the_thermal_conductivity_of_the_rod_material$
A.	21.87 W/m degree
B.	20.87 W/m degree
C.	19.87 W/m degree
D.	18.87 W/m degree<sub></sub>
Answer» E.

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