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The electron in the hydrogen atom jumps ...

The electron in the hydrogen atom jumps from excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be: (The energy of the electron in nth state is `E_(n)=-13.6//n^(2)eV`)

A

`12.1 V`

B

`17.2 V`

C

7 V

D

`5.1 V`

Text Solution

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The correct Answer is:
C
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