The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio [MP PET 1984; BVP 2003]

The ratio of thermal conductivity of two rods of different material is

1.	The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio [MP PET 1984; BVP 2003]
A.	4 : 5
B.	9 : 1
C.	\[\text{135}{}^\circ \]
D.	5 : 4
Answer» E.

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The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio [MP PET 1984; BVP 2003]

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