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The work function of a metallic surface ...

The work function of a metallic surface is `5.01 eV`. The photo - electrons are emitted when light of wavelength `2000 Å` falls on it . The potential difference applied to stop the fastest photo - electrons is `[ h = 4.14 xx 10^(-15) eV sec]`

A

`1.2 V `

B

2.24 V

C

3.6 V

D

4.8 V

Text Solution

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The correct Answer is:
A
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