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The body which reflects the entire radiation incident on it is said to be

The body which reflects the entire radiation incident on it is said to be Correct Answer White

White Body:

  • A body that is called a white body is one that reflects almost all radiations incident upon it and does not absorb or transmit any part of it.
  • For a white body, α = τ = 0, ρ = 1

Additional Information

Black body

  • A black body is an object that absorbs all the radiant energy reaching its surface.
  • No actual body is perfectly black; the concept of a black body is an idealization with which the radiation characteristics of real bodies can be compared.
     

Properties of the black body:

  • It absorbs all the incident radiation falling on it and does not transmit or reflect regardless of wavelength and direction
  • It emits the maximum amount of thermal radiation at all wavelengths at any specified temperature
  • It is a diffuser emitter (i.e. the radiation emitted by a black body is independent of direction)
  • Transparent body: τ = 1, α = ρ = 0
  • Opaque body: τ = 0

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