The two ends of a straight line have coordinates (1,3) and (2,5). it is to be reflected about a straight line that passe: s through the points (0, 0.5) and (4, 6). write the necessary transformation matrix for the above operation, and determine the new coordinates of the end points of the line.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

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?