Question

When greater number of excited hydrogen atoms reach the ground state, then

• A. more number of lines are found in Lyman series
• B. the intensity of lines in Balmer series increase
• C. the intensity of lines in Lyman series increase
• D. both the intensity and number of lines in Lyman series increases

Answer 1

The correct option is C the intensity of lines in Lyman series increase

The spectral series of hydrogen atoms is shown above. When one ore more excited hydrogen atoms reach the ground state, Lyman series is seen and the intensity increases, as more energy is released by the different atoms returning to ground state. So, the intensity of light emitted in this phenomenon belongs to Lyman series and it is very high. Hence, answer is C.