Due to transitions among its first three energy levels, hydrogenic atom emits radiation at three
Channel: Doubtnut
Date: 2020-08-30

Due to transitions among its first three energy levels, hydrogenic atom emits radiation at three discrete wavelengths `lamda_(1), lamda_(2), " and " lamda_(3) (lamda_(1) lt lamda_(2) lt lamda_(3))`. Then