Two brass rods are heated through the same temperature. Rod A is 0.8 m long with radius 1 cm. Rod B is 2.4 m long with radius 3 cm. Find the ratio of the increase in length of A to that of B (two deci

Question

Two brass rods are heated through the same temperature. Rod $A$ is 0.8 m long with radius 1 cm. Rod $B$ is 2.4 m long with radius 3 cm. Find the ratio of the increase in length of $A$ to that of $B$ (two decimals).

Answer:

0.33

Solution:

$Δ l = l α Δ T$ does not depend on the radius. The ratio is $\frac{0.8}{2.4} = 0.33$ .

TestHub · Accepted Answer

Δ l = l α Δ T does not depend on the radius. The ratio is 2.4 0.8 ​ = 0.33 .

Physics - Heat & Thermo Question with Solution | TestHub

Doubts & Discussion