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energy of positronium (which is a bound state of an electron and a positron) is
A hollow conducting sphere has inner radius of a and outer radius of b. If a charge of Q is located at its center and the hollow sphere has a net charge of + 30 . what is the charge distribution in the hollow sphere ?
with a diameter of 2 mm. The index of refraction for water is 1.33, the lens index of refraction 1.4,
and vitreous humor and aqueous humor have similar refrection index 1.34.
i. Describe the energy chain which occurs at a power station which uses coal as fuel.
ii. Account for energy losses if production of electrical energy is not at 100%.
1. A multimode step index fiber has a relative refractive index difference of 2% and core refractive index of 1.48. The maximum optical bandwidth that may be obtained with a particular source on a 5km link is 3Mhz. Determine the rms pulse broadening per kilometre resulting from chromatic dispersion mechanisms. Assuming waveguide dispersion to be negligible, estimate the rms spectral width of the source used, if the material dispersion parameter for the fiber at the operating wavelength is 80 ps nm-1 km-1.
2. A 1km length multimode step index fiber has a spectral width of 50nm with intermodal and intramodal dispersion of 10 ns/km and 100 ps/km respectively. Calculate the total dispersion and maximum bit rate.
