1.

The velocity of an electron at point A_(1) is V_(0) where cross sectional areas is A. The velocity of electron just the end of contraction at point B, where cross sectional area is 2A is V_(1). Find the correct option:

Answer»

`V_(1) lt V_(0)`
`V_(1)=V_(0)`
`V_(1) GT V_(0)`
`V_(1)=(V_(0))/(2)`

SOLUTION :As the electrons comes near the THROAT, positive charges are INDUCED on the throat. The induced charges attract the electron and velocity INCREASES. So `V_(1)gtV_(0)`.


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