MCQ
Two identical objects $A$ and $B$ are at temperatures $T$ and $T$. respectively. Both objects are placed in a room with perfectly absorbing walls maintained at temperatures $T\left(T_A>T>T_B\right)$. The objects $A$ and $B$ attain temperature $T$ eventually which one of the following is correct statement
  • A
    ' $A$ ' only emits radiations while $B$ only absorbs them until both attain temperature
  • A loses more radiations than it absorbs while $B$ absorbs more radiations that it emits until temperature $T$ is attained
  • C
    Both $A$ and $B$ only absorb radiations until they attain temperature $T$
  • D
    Both $A$ and $B$ only emit radiations until they attain temperature $T$

Answer

Correct option: B.
A loses more radiations than it absorbs while $B$ absorbs more radiations that it emits until temperature $T$ is attained
A loses more radiations than it absorbs while $B$ absorbs more radiations that it emits until temperature $T$ is attained

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