Heat and Thermal ExpansionHard
Question
Two identical square rods of metal are end are welded end to end as shown in figure (a) 20 calories flows through it in 4 minutes. If the rods are welded as shown in figure (b), The same amount of heat will flow through the rods in :-
Options
A.1 minute
B.2 minute
C.4 minute
D.16 minute
Solution
Fig A : 20 = 
× 4
Fig A : 20 Q = (100 - θ)
Equation (i) / (ii) 1 =
t = 1 min.
× 4Fig A : 20 Q = (100 - θ)
Equation (i) / (ii) 1 =
t = 1 min. Create a free account to view solution
View Solution FreeMore Heat and Thermal Expansion Questions
N(< 100) Molecules of a gas have velocities 1, 2, 3.........N , km/s respectively . Then :-...Certain prefect gas is found to obey PVn = constant during adiabatic process. The volume expansion cofficient at tempera...In the Searle′s experiment, after every step of loading, why should we wait for two minutes before taking the read...Three rod of some dimensions are arranged as shown in the figure. They have thermal conductivities k1, k2 & k3. The poin...A thermocouple is made from two metals, Antimony and Bismuth. If one junction of the couple is kept hot and the other is...