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Physics · May / June 2025 · Paper 11 · Question 21

5054Radiation

Which description of a dull black surface is correct?

  1. Agood emitter, good absorber and good reflector of radiation
  2. Bgood emitter, poor absorber and poor reflector of radiation
  3. Cgood emitter, good absorber and poor reflector of radiation
  4. Dpoor emitter, poor absorber and poor reflector of radiation

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Correct answer: C. good emitter, good absorber and poor reflector of radiation

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