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Two identical rods of same metal are fir...

Two identical rods of same metal are first waleded in series and then in parallel are maintained at same temperature difference then the ratio of heats conducted in same time is .

A

`1 :1`

B

`1:2`

C

`1:4`

D

`1:3`

Text Solution

Verified by Experts

The correct Answer is:
C
`Q=(KA(Delta theta)t)/(l)`
`(Q_(1))/(Q_(2))=(K_(s)A(Delta theta)t)/(2l)xx(l)/(K_(p)2A(DeltaA)t)("here "K_(s)=K_(p))`
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