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        a monochromatic light source of frequency f illuminate a metallic surface and eject a photo electron the photo electron having maximum energy are just able to ionize the hydrogen atom in ground state when the whole experiment is repeated with incident radiation of frequency 5/6f the photo electron are able to excite the hydrogen atom which then emits a radiation of wavelength 1215 angstrom find the frequency f
one year ago

Eshan
2095 Points
							Energy required ionize the hydrogen atom=Since the atom in the second case de-excites to give out radiation of wavelength, the energy of incident photoelectrons must also have been equal to the same energy=Subtracting the two equations and solving gives,

one year ago
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### Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions