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The magnetic field associated with a lig...

The magnetic field associated with a light wave is given, at the origin, by
`B=B_(0)[sin(3.14xx10^(7))ct +sin(6.28xx10^(7))ct].`
If this light falls on a silver plate having a work function fo 4.7 eV, what will be the maximum kinetic energy of the photo electrons?
`(c=3xx10^(8)ms^(-1),h=6.6xx10^(-34)J-s)`

A

6.82 eV

B

7.72 eV

C

12.5 eV

D

8.52 eV

Text Solution

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The correct Answer is:
B
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