Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field `E` through a distance of `1.0m` The electron are now scattered by an atomic hydrogen sample in ground state what should be the minimum value of `E` so that red light of wavelength `656.5 nm` may be emitted by the hydrogen?

Electron are emitted from an electron gun at almost zero velocity and

1.	Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field `E` through a distance of `1.0m` The electron are now scattered by an atomic hydrogen sample in ground state what should be the minimum value of `E` so that red light of wavelength `656.5 nm` may be emitted by the hydrogen?
Answer» Correct Answer - `[12.1 "volts"//m]`

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