At room temperature the electrical conductivity of some semiconducting material is 26 (ω-m)-1, whereas the electron and hole mobilities are 0.64 and 0.020 m2/v-s, respectively. compute the intrinsic carrier concentration for this material. use scientific notation (x. xe+xx) enter your answer in accordance to the question statement m-3

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

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?