1
JEE Main 2020 (Online) 8th January Evening Slot
Numerical
+4
-0
Change Language
The first member of the Balmer series of hydrogen atom has a wavelength of 6561 Å. The wavelength of the second member of the Balmer series (in nm) is:
Your input ____

JEE Main Papers

All year-wise previous year question papers

2023
2021