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The radiation emitted when an electron j...

The radiation emitted when an electron jumps from `n=3` to `n=2` orbit of hydrogen atom falls on a metal to produce photoelectrons. The electrons emitted from the metal surface with maximum kinetic energy are made to move perpendicular to a magnetic field of `(1)/(320)` T is a radius of `10^-3m`. Find:
A. the kinetic energy of the electrons,
B. work function of metal, and
C. wavelength of radiation.
(Planck's constant `h=6.62xx10^-32J-s`)

A

1.03 eV

B

1.89 eV

C

0.86 eV

D

2.03 eV

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The correct Answer is:
A
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