I feel something is wrong
Bro I am getting only A amd D.Not getting b.
can u post these 2 opt 's sol
Shall i explain?
yupp…it will do
This was told by our sir.
Got it bro or any doubt?
please do clear my doubt also.
I have some contradictions wait ill have to type
I am going to study now.Will see your contradiction in morning…
1)how we can excite an e directly from n=2…e cant be in n=2 …we will have to excite it from ground state …
2) elastic collision can take place as when we excite it from gs …then min to min energy req for a excitation is from n=1 to n=2 …but if the max energy which can be lost (i,e; which can be in inelastic collision …) for this case 4K/5 is less than energy reqd to transfer to 1st excited state …then no transition takes place …and collsion is perfectly elastic
Sorry bro.I took energy of He+ in ground state as zero by mistake.Then I think the options are wrong.
They did 5/4 ×3/4=3/5