What is Poisson's effect? A. Linear elastic deformation occurs only below the proportional limit B. The lateral strain is always opposite and proportional to the axial strain. C. Plastic deformation occurs when the stress exceeds the yield strength of a deformable body D. Stress is always proportionally related to strain

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?