Question:-
A fin length/protrudes form a surface held at temperature t0 greater than the ambient temperature ta. The heat dissipation from the free end of the fin is assumed to be negligible. The temperature gradient at the fin tip (dt/dx) x = l is
Option (A)
Zero
Option (B)
(tl-ta) / (t0-tl)
Option(C)
h(t0-tl)
Option(D)
(t0-tl) / l
Correct Option:
(A)
Question Solution:

At the end of fin, temperature gradient is negligible
question-answer-faq-6069