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(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.
(ii)Thermions have dissimilar velocities.
(iii)This was discovered by Edison
#question-the measurement of 30.43 degrees north of east..
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Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
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why the reflective index of cladding is lower then in core of a fiber optic?
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