WBCS.LIVE practice question

Good absorbers of heat are

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. poor emitters
  2. non-emitters
  3. good emitters
  4. highly polished

Correct answer and explanation

Correct answer: good emitters

Explanation: ✅ Correct Answer: C) good emitters 📚 Explanation: According to Kirchhoff’s Law of thermal radiation, a good absorber of a particular wavelength is also a good emitter of that same wavelength. Therefore, surfaces that absorb heat efficiently will also radiate it away efficiently once the source is removed.