Heat TransferHard
Question
The ratio of cofficient of thermal conductivity of two different materials is 5:3. If the thermal resistance of rods of same thickness of these material is same, then what is ratio of lenght of these rods -
Options
A.3 : 5
B.5 : 3
C.25 : 9
D.9 : 25
More Heat Transfer Questions
By cooling two liquids of equal volume from temp. 60 oC to 50 oC in same conditions time required are 324 and 810 sec.re...A perfectly black body is one where :...2 gms steam at 100o C is mixed with 5 gm ice at - 40oC in an ideal calorimeter. The final temperature of the system will...Two rectangular blocks A and B of different metals have same length and same area of cross-section. They are kept in suc...The rate of solar energy falling on unit area of earth′s surface is nearly (kilo - watt / m2)...