Practical for finding ionization potential/energy of mercury
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- เผยแพร่เมื่อ 6 ก.ย. 2024
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ਡਾ. ਮਹਾਜਨ
ਐਸੋਸੀਏਟ ਪ੍ਰੋਫੈਸਰ (ਫਿਜ਼ਿਕਸ)
9888169226
Thnku sir😊
Thanks sir.
But you didn't tell about the glowing of gas tube..
It happens when voltage exceeds to ionisation voltage
Which book u using please tell sir
Great😍
Thanku so much sir
Watching from Pakistan
Shukriya ji
Sir in this practical ... What questions for viva occur.. plz answer me sir
What is ionisation potential and it's unit
Which phenomenon is involved in glowing the mercury tube
Why mercury is used for ionisation?
@@Tarlochanmahajan sir plz explain the answer alsoo🙏
@@sarika9121But slowly when you increase the potential difference in between the anode and cathode plate some more electrons attract towards the anode plate. The current increases every time because a number of electrons attract towards the anode plate.
You can also conclude that when you are increasing the potential between the plates the kinetic energy of emitted electrons is also increasing. At a certain amount of kinetic energy of the emitted electrons, it reaches that level where they are capable of a knockout the electron from mercury atoms.
Here, the ejected electrons from the mercury atom are known as secondary electrons. Now secondary electrons are also contributed in the current along with the primary electrons.
When a sufficient voltage is applied all the electrons emitted from the cathode reach at the plate along with the secondary electrons. This is the reason that the current suddenly increases at a certain applied voltage. That value of the applied voltage known as the ionization potential of mercury.
@@sarika9121 Mercury is used because of its high vapor pressure and low ionization potential. ... Photons emitted by ionized mercury atoms can be absorbed by nearby nonionized atoms and either reradiated or the atom is deexcited nonradiatively, too high mercury pressure therefore causes losses of light.
@@sarika9121 can call on WhatsApp
98888169226
Angrezi ta asi vi pad sakde a
Sir pag dekh ka ta lagya si
Hahahaha
Sir,do u speak Punjabi ?
Ji sure...
Vi tusi punjabi bolo ge
Gal ta punjabi ch samjhaun di si
Thank you sir 🙏