1.

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.

Answer»

`(4k_(1)k_(2))/((k_(1)+k_(2))^(2))`
none
`((k_(1)+k_(2))/(k_(1)-k_(2)))`
`(k_(1)k_(2))/((k_(1)+k_(2))^(2))`

SOLUTION :`y=Asin(kx-omegat)`
`(v_("PARTICLE"))_("max")=Aomega=(2piAV)/(lambda)`
WAVE speed `=v=(omega)/(k)`


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