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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
The signal which has only two values. I.e. either a constant high value of voltage or zero value is known as digital voltage signal
SKIPPING IS A WHAT TYPE OF MOTION
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The relative permeability of a paramagnetic substance is (A) Unity. (B) Slightly more than unity. (C) Zero. (D) less than unity. Ans: The relativ
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define capacitor filter briefly?
how do you produce a pure spectrum
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