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A cylindrical rod with one end in a stea...

A cylindrical rod with one end in a steam chamber and the other end is in ice It is found that `1gm` of ice melts per second If the rod is replaced by another one of same material double the length and double area of cross section, The mass of ice that melts per second is .

A

`2 gm`

B

`4 gm`

C

`1 gm`

D

`0.5 gm`

Text Solution

Verified by Experts

The correct Answer is:
C
`Q=mL=(KA(theta_(1)-theta_(2)t))/(l)rArr(m_(2))/(m_(1))=(A_(2))/(A_(1))=(l_(1))/(l_(2))`
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