1.

Consider the following statements: 1. Absorptivity depends on wave length of incident radiation waves 2. Emissivity is dependent on wave length of incident radiation waves Which of the above statements is/are correct?(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Answer»

(c) Both 1 and 2 

Both emissivity and absorptivity depends on wavelength of incident radiation. The emissivity at a certain wavelength is called spectral emissivity likewise absorptivity. This applicable for real surface.



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