When an electron jumps from the orbit n=2 to n=4 , then wavelength of the radiations absorbed will be ( R is Rydberg's constant)

Step-by-step solution

Wavelength, aligned & 1 =R [ 1 n₁² - 1 n₂² ] & 1 =R [ 1 (2)² - 1 (4)² ] & 1 =R [ 1 4 - 1 16 ] & 1 =R [ 4-1 16 ] & 1 = 3 R 16 & = 16 3 R aligned