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a) Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
b) A parallel plate capacitor with air among the plates has a capacitance of 8 pF. What will be the capacitance if the distance among the plates he reduced by half and the space among them is filled with a substance of dielectric constant K=6?
Olbers' paradox (H. Olbers; 1826): If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further yo
calour formed in pure and impure spectrum
What is LASER? describe the construction and working of He-Ne Laser with suitable diagram
what is acqustic phenomenon?
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If electrons are treated as classical particles,which statistics will they follow?
a. A certain radioactive material emits gamma rays with energy 1 MeV. Another sample of radioactive material emits gamma rays with energy 10 keV. If both of these emit the same amo
Inductors in dc circuits: If it is required to increases the value of inductance in a circuit, then two or more inductors may be connected in series. The total inductance then
What are the advantages of fibre optic communication? Advantages of fibre optic communication are as follows: a. Enormous band width Coaxial cable transmission of 500 M
1. Fill a sink or bath tub with water. 2. Practice tapping the cork on the surface of the water (about 3 _times per second works well) to create evenly spaced waves. 3. Tappi
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