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Light of two different frequencies whose...

Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. The ratio of maximum speed of emitted elections will be

A

`1:3`

B

`1:2`

C

`3:1`

D

`2:1`

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The correct Answer is:
B
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