Question

Two thermometers $A$ and $B$ are exposed in sun light. The value of $A$ is painted black. But that of $B$ is not painted. The correct statement regarding this case is

• A. Temperature of $A$ will rise faster than $B$ but the final temperature will be the same in both
• B. Both $A$ and $B$ show equal rise in beginning
• C. Temperature of $A$ will remain more than $A$
• D. Temperature of $B$ will rise faster

Answer 1

Answer: (A)

Temperature of $A$ will rise faster than $B$ but the final temperature will be the same in both

As for a black body rate of absorption of heat is more. Hence , thermometer $A$ shows faster rise in temperature but finally both will acquire the atmospheric temperature.The correct statement regarding this case is temperature of $A$ will rise faster than $B$ but the final temperature will be the same in both .