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Lights of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate successively a metal surface whose work function is 0.7 eV. The ratio of the maximum speeds of the emitted electrons will have

A

`1:6`

B

`1:3`

C

`1:4`

D

`1:5`

Text Solution

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The correct Answer is:
c
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