Questions
Two identical plates of metal are welded end to end as shown in Fig.
(A) 20 cal of heat flows through it in 4 minute. If the plates are welded as shown in Fig.
(B) the same amount of heat will flow through the plates in.
a
1 minute
b
2 minute
c
4 minute
d
16 minute
detailed solution
Correct option is A
20 cal4 min=KA(T1-T2)2land 20 calt min=K(2A)(T1-T2)l⇒t=1 minTalk to our academic expert!
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