AIEEE 2003 Chemistry Solved Paper

In Bohr series of lines of hydrogen spectrum :-
Red end means end of visible region which is Balmer series of lines so n will be 2
Now for third lines with respect to Balmer series means n=(2+3)=5‌th ‌ line
∴n1=2 and n2=5
For 2→5 electron will need energy to jump as 2>5 so no spectrum will release instead energy will be absorbed.
∴5→2