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The radiation corresponding to 3 rarr 2 ...

The radiation corresponding to `3 rarr 2` transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of `3 xx 10^(-4) T`. If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of the metal is close to :

A

1.6 eV

B

1.8 eV

C

1.1 eV

D

0. 8 eV

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The correct Answer is:
C
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