JEE Main 202227 Jun, Morning shiftPhysicsMediumAtoms and Nuclei183× since 2002
A beam of monochromatic light is used to excite the electron in Li^+ + from the first orbit to the third orbit. The wavelength of monochromatic light is found to be x 10^10 m. The value of x is ___________.
[Given hc = 1242 eV nm]