Question

Two Rods of same cross sectional area and same length but different thermal conductivity `K_(1)` and `K_(2)` are first connected in series and then connected in parallel between same temperature difference in both cases 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))`

Answer 1

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