Transmission Of Heat Question 75
Question: The heat is flowing through a rod of length 50 cm and area of cross-section $ 5cm^{2} $ . Its ends are respectively at $ 25^{o}C $ and $ 125^{o}C $ . The coefficient of thermal conductivity of the material of the rod is 0.092 kcal/m×s×oC. The temperature gradient in the rod is
[MP PET 2002]
Options:
A) $ 2^{o}C/cm $
B) $ 2^{o}C/m $
C) $ 20^{o}C/cm $
D) $ 20^{o}C/m $
Show Answer
Answer:
Correct Answer: A
Solution:
Temperature gradient $ \frac{d\theta }{dx}=\frac{{{(125-25)}^{o}}C}{50\ cm}=2{}^\circ C/cm $
BETA
