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.

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

1 minute

2 minute

4 minute

16 minute

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

20 cal4 min=KA(T1-T2)2land 20 calt min=K(2A)(T1-T2)l⇒t=1 min

Watch 3-min video & get full concept clarity