Transmission Of Heat Question 40
Question: If the ratio of coefficient of thermal conductivity of silver and copper is 10 : 9, then the ratio of the lengths upto which wax will melt in Ingen Hausz experiment will be
[DPMT 2001]
Options:
A) 6 : 10
B) $ \sqrt{10}:3 $
C) 100 : 81
D) 81 : 100
Show Answer
Answer:
Correct Answer: B
Solution:
$ K _{1}:K _{2}=l _{1}^{2}:l _{2}^{2}\Rightarrow \frac{l _{1}}{l _{2}}=\sqrt{\frac{K _{1}}{K _{2}}}=\sqrt{\frac{10}{9}}=\frac{\sqrt{10}}{3} $
BETA
