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When photon oFIGURE energy 4.0eV strikes...

When photon oFIGURE energy 4.0eV strikes the surFIGUREace oFIGURE a metal, the ejected photoelectrons have maximum kinetic energy `T_(A)` eV and de-Broglie wavelength `lambda_(A)`. The maximum kinetic energy oFIGURE photoelectrons liberated FIGURErom another metal B by photon oFIGURE energy 4.50eV is `T_(B)=(T_(1)-1.5)eV`. IFIGURE the de-Broglie wavelength oFIGURE these photoelectrons `lambda_(B)=2lambda_(A)`, then the work, FIGUREunction oFIGURE metal B is:

A

3 eV

B

1.5 eV

C

4.5 eV

D

4 eV

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