Athermanous bodies are those

Plastic bodies are those which

Plastic bodies are those which

A substances may be athermanous or diathermanous for certain wavelength, while good absorber for other wavelength. Explain.

Largest spermatozoids are those of

Largest spermatozoids are those of

If an athermanous body absorbs 20% of the incident radiant energy, then reflection coefficient of the body is

If an athermanous body absorbs 20% of the incident radiant energy, then reflection coefficient of the body is