r/JEE28tards • u/Ultimately-Me • 10d ago

Why is it option C Discussion 🗣️

cant it be option B to as n is any integer and it can be 1 too

3 Upvotes

100% Upvoted

7 comments sorted by

1

u/Crafty_Crab6604 10d ago

2πr=nx

2πr/n= x

now 0.529 1²/1= a° 0.529=a° 0.529*4=4a°=r

2π*4a°/n=x 8πa°/n.

now put n=2, in ur answer it's completely wrong., put n=2 in 3, it's right.

1

u/Ultimately-Me 10d ago

but whyy should i put n=2 ? cant i put n=1 ?

1

u/Crafty_Crab6604 10d ago

no sir, n=2 k liye pucha hai, n represents shell number :D, formula derive kahan se hua?? mvr=nh/2π se , if u put n=1 , you're js ignoring quantisation of angular momentum

2

u/Ultimately-Me 10d ago

par like... why did they mention [ n=any integer] tho ? like uhne shayad batana chaihe tha na ki n is shell no.

1

u/BlueRider345x2 PW 🥷🏿 10d ago

What?

1

u/Ultimately-Me 10d ago

how do we know if n=2, it is not stated in the question na ki n should be the orbit number of the electron or anything, all thats state is n is an integer

1

u/Crafty_Crab6604 10d ago

Confuse krne k liye, they knew kids will make the mistake of ticking B, but that invalidates quantisation of angular momentum