Question

Substances can emit or absorb radiant energy to varying extent provided their temperature is above ____

• A. 273\(^\circ\)K
• B. 298\(^\circ\)K
• C. 0\(^\circ\)K
• D. 1000\(^\circ\)K

Hint:

All real objects emit radiation if \( T>0\,K \).

Answer 1

The Correct Option is C

Any object with temperature>0 K emits radiation.
At absolute zero (0 K), thermal motion ceases and hence radiation emission stops.