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Two identical rods with different therma...

Two identical rods with different thermal conductivities `k_(1)" & "k_(2)` and different temperatures are first placed along length and then along area, then the ratio of rates of heat flow in both cases is

A

`(4k_(1)k_(2))/((k_(1)+k_(2))^(2))`

B

none

C

`((k_(1)+k_(2))/(k_(1)-k_(2)))`

D

`(k_(1)k_(2))/((k_(1)+k_(2))^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
`y=Asin(kx-omegat)`
`(v_("particle"))_("max")=Aomega=(2piAV)/(lambda)`
wave speed `=v=(omega)/(k)`
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