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 IngenHausz experiment will be

• A. 6 : 10
• B. $\sqrt{10}:3$
• C. 100 : 81
• D. 81 : 100

Answer 1

Answer: (B)

$\sqrt{10}:3$

Answer 2

According to Ingen Hausz, $K \propto l^{2}$

∴ $\frac{l_{1}}{l_{2}} = \sqrt{\frac{K_{1}}{K_{2}}} = \sqrt{\frac{10}{9}} = \frac{\sqrt{10}}{3}$.