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An electromagnetic radiation whose elect...

An electromagnetic radiation whose electric component varies with time as `E=E_0(1+cos omegat)cos omega_0t(omega=6xx10^(15) "rad"//s, omega_0=2.8 xx10^(14) "rad"//s)` is incident on a lithium surface (work function =2.39 eV) .
The maximum kinetic energy of a photoelectron liberated from the lithium surface is `(h=4.14 xx10^(-15) eV-s)

A

2.50eV

B

1.90eV

C

1.75 eV

D

1.50 eV

Text Solution

Verified by Experts

The correct Answer is:
C
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