Two identical square rods of metal are welded end to end as shown in figure (i), 20 cal…
Physics · JEE Advanced · NTA Exams — Thermodynamics
Two identical square rods of metal are welded end to end as shown in figure (i), 20 cal of heat flows through it in 4 min. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in :
- 1 min
- 2 min
- 4 min
- 16 min
Answer
(A) 1 min
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