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The quantity of heat flowing for 10 seco...

The quantity of heat flowing for 10 seconds through a rod of length 40 cm, area 50 `cm^(2)` is 200 J. If the temperature difference at the ends of the rod is `80^(@)`C, then coefficient of thermal conductivity of the rod in `Wm^(-1)K^(-1)` is

A

120

B

80

C

20

D

60

Text Solution

Verified by Experts

The correct Answer is:
C
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