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The work function of tungsten is 4.50 eV...

The work function of tungsten is 4.50 eV . The wavelength of fastest electron emitted when light whose photon energy is 5.50 eV falls on tungsten surface, is

A

12.27 Å

B

0.286 Å

C

12400 Å

D

1.227 Å

Text Solution

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The correct Answer is:
A
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