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The ratio of thermal conductivity of two...

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

A

`4:5`

B

`9:1`

C

`1:9`

D

`5:4`

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The correct Answer is:
D
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AAKASH INSTITUTE-THERMAL PROPERTIES OF MATTER-Assignment (Section-A) Objective Type questions (one option is correct)
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  10. In heat transfer, which method is based on gravitation

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  11. The process in which rate of transfer of heat maximum is .

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  12. Good absorbers of heat are

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