In Coolidge tube electrons were ejected by the cathode because of which method:

Thermionic emission

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Photo electric emission

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Corona discharge

No worries! We‘ve got your back. Try BYJU‘S free classes today!

All of the above.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Thermionic emission

In a Coolidge tube set-up a filament is used as the cathode which eject electrons when heated by passing electric current through it. This method is called as thermionic emission.

Suggest Corrections

Similar questions

In Coolidge tube electrons were ejected by the cathode because of which method:

In the Coolidge tube, the cathode is heated till electrons are thermionically ejected from the filament. We could also use photoelectric effect on the cathode plate to obtain these electrons for x-ray generation.

Q. In a Coolidge tube, high speed electrons emitted from the cathode are accelerated through a potential difference of

20 k V

. Find the minimum wavelength of the X-rays produced.
(Take Planck's constant,

h = 6.6 \times 10^{- 34} J s

)

Q. In coolidge tube the potential difference between cathode and anticathode is

120 k V

. The maximum energy of emitted X-rays will be :-

The atomic energy increases when an existing electron is removed from it. This is because work is required to be done to remove an electron. We call these Atomic Energy Levels.

The atomic energy levels of a hypothetical atom is given here

Ek	1000 ev
El	700 ev
Em	600 ev
En	550 ev

If an electron coming from the cathode (in a Coolidge tube set-up ) has to knock out an electron of L shell of the mentioned hypothetical atom, what should be the minimum accelerating potential of the setup ?

Join BYJU'S Learning Program

In Coolidge tube electrons were ejected by the cathode because of which method:

The correct option is A Thermionic emission In a Coolidge tube set-up a filament is used as the cathode which eject electrons when heated by passing electric current through it. This method is called as thermionic emission.

The correct option is A
Thermionic emission

In a Coolidge tube set-up a filament is used as the cathode which eject electrons when heated by passing electric current through it. This method is called as thermionic emission.