Published by:
CGP EDU Academic Team
Published on: August 13, 2026
SECTION- B
In Franck-Hertz experiment, the first dip in the current-voltage graph for hydrogen is observed at 10.2 V. The wavelength of light emitted by hydrogen atom when excited to the first excitation level is _____ 
.
(Given hc 
).
Text Solution
Verified by ExpertsThe correct answer is:
122
(122)
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